Our editors independently research, test, and recommend the best products; you can learn more about ourreview process here.We may receive commissions on purchases made from our chosen links.The RundownBest Overall:Arris Surfboard SB6190 at Best Buy"A powerful but unobtrusive and reliable little workhorse."Best for Gigabit Internet:Motorola MB8600 at Amazon"Low latency and four Gigabit Ethernet ports make this a solid performer for the fastest cable internet plans."Best Performance:Netgear CM1200 at Amazon"DOCSIS 3.1 support and four Gigabit Ethernet ports with link aggregation offer LAN speeds of up to 2Gbps."Best Compact:Arris Surfboard SB8200 at Amazon"DOCSIS 3.1 support makes this one of the most future-proof cable modems you can buy."Best Value:Motorola MB7621 at Amazon"A really affordable cable modem for most people's needs, with speeds of up to 650Mbps."Best for Voice Services:Netgear Nighthawk CM1150V at Amazon"Offers blazing fast DOCSIS 3.1 speeds and compatibility with Xfinity internet voice services."Best for Smaller Homes:Netgear C6250 at Amazon"Solid performance for getting your 4K videos around your home."Best Budget:Netgear CM500 at Amazon"A simple yet smart modem that can easily handle plans of up to 300Mbps."Best Features:Motorola MG7550 at Amazon"Delivers the speed you'd expect from a modern unit, plus some cool proprietary capabilities."in this articleExpandOur PicksAbout Our Trusted ExpertsFAQsThe Ultimate Cable Modem Buying Guide
The best cable modems are a great alternative to paying monthly rental fees to your ISP, especially when you consider that you can save up to $168/year by purchasing your cable modem outright. While your cable provider is likely only supplying you with a basic device that's good enough for the plan you're on, the best cable modems can make sure you're ready for the next generation of internet speeds.
Of course, that doesn't mean you need to empty your wallet buying an ultra-high performance cable modem if you don't think you'll ever need to surf and download at multi-gigabit speeds, as there are many solid and affordable cable modems available for those with more modest needs that can still help to untie you from your ISP's rental. Those who want maximum performance, however, can find some powerful DOCSIS 3.1 units that are ready for plans of up to 10Gbps, making them great for large and busy homes where everyone in the family is streaming in 4K, gaming, and hanging out on Zoom and FaceTime. The best cable modems are certified by every major cable provider and will work with the wireless router you already have. They're ideal for any cable subscriber who is tired of paying monthly rental fees.
Best Overall:Arris Surfboard SB6190Buy on Best BuyBuy on WalmartBuy on EBayWhat We Like
Great for HD movies and gaming
Convenient LED indicator lightsWhat We Don't Like
Coaxial connection placement isn't ideal
Arris makes some of the most reliable cable modems available, and the SB6190 is no exception; it's a powerful little workhorse that will more than meet the needs of anybody who doesn't need blazing fast gigabit internet speeds and wants something that can be tucked away unobtrusively. At 5 x 5 x 2.1 inches, it's small enough to fit on a shelf next to your cable box or router.
A successor to Arris' extremely popular SB6183, the SB6190 is well supported by all of the major cable providers, so you won't have any problem getting it set up with your ISP, and the 32x8 channel bonding can deliver download speeds of up to 1.4Gbps and upload speeds reaching 260Mbps. There's only a single Gigabit Ethernet port on the back, but Arris expects that most users will be adding their own Wi-Fi router into the mix anyway. The coaxial cable connection is a bit awkwardly placed close to the power connector, but once it's plugged in that's not something you'll need to deal with, and the compact size of the SB6190 makes it worth the tradeoff.The 9 Best Gaming Routers of 2021
Best for Gigabit Internet:Motorola MB8600 DOCSIS 3.1 Cable ModemBuy on AmazonBuy on Best BuyBuy on B&H Photo VideoWhat We Like
DOCSIS 3.1 Support
Four Gigabit Ethernet portsWhat We Don't Like
No support for bundled voice services
Additional Ethernet ports are hidden
If you're planning to jump onto a higher-speed internet plan, then you need a cable modem that can keep up with the latest DOCSIS 3.1 standards, and this is where Motorola's MB8600 comes in. Capable of delivering speeds of up to 3.8Gbps downstream with a compatible router, plus 1Gbps upstream, this cable modem should offer ample performance for even the busiest families.
Thanks to DOCSIS 3.1 Active Queue Management, the SB8600 is also among the lowest latency cable modems available, making it a great choice for fast-paced online gaming and video conferencing, but it's also backward-compatible with the DOCSIS 3.0 standard, offering full 32x8 channel support for the fastest sub-gigabit plans, which means you can buy this one to stay ahead of the curve even if your ISP isn't offering gigabit plans just yet.
A single Gigabit Ethernet port on the back lets you connect any wireless router, but the MB8600 also has another trick up its sleeve—there are actually three more Gigabit Ethernet ports hidden away under the label on the back, allowing you to connect a router that supports 802.3ad link aggregation to get multi-gigabit speeds; Motorola has simply chosen to hide the extra ports to avoid confusion, since they can't be used for connecting multiple devices—you'll need to hook up your own router for that.
Best Performance:Netgear Nighthawk CM1200 Multi-Gig Speed Cable ModemBuy on AmazonBuy on Best BuyBuy on WalmartWhat We Like
DOCSIS 3.1 Support
Four Gigabit Ethernet Ports
802.3ad Link AggregationWhat We Don't Like
No voice features
If you're looking for a high-performance cable modem that will keep up with all of the latest internet standards, then Netgear's CM1200 has you covered. The two upstream and two downstream OFDM DOCSIS 3.1 channels will give you download speeds easily reaching 2Gbps, so you'll be ready for your ISP's multi-gigabit internet plans.
Of course it's also compatible with the much more common DOCSIS 3.0 standard, and with 32 downstream and 8 upstream channels, it's as fast as a DOCSIS 3.0 cable modem gets, meaning you'll still get outstanding download speeds while you wait for your cable provider to roll out DOCSIS 3.1 in your area.
The four Gigabit Ethernet ports around back also give you the ability to connect multiple devices, and it even supports assigning multiple IP addresses—one to each port—so you can support up to four separate home networks, or you can link up two of the ports using 802.3ad link aggregation to a compatible router (like Netgear's RAX80) to take full advantage of a 2Gbps DOCSIS 3.1 cable plan.
Best Compact:Arris Surfboard SB8200Buy on AmazonBuy on Best BuyBuy on WalmartWhat We Like
DOCSIS 3.1 Support
Two Gigabit Ethernet ports with link aggregationWhat We Don't Like
Awkward coaxial connection placement
If you're lucky enough to be on a cable provider that can deliver gigabit-class internet speeds, you'll definitely want to go with a DOCSIS 3.1 capable cable modem for the best performance, and venerable cable modem manufacturer Arris has you covered with its SB8200 Gigabit Cable Modem.
The SB8200 is built in the same classic Arris style, but in this case the unassuming design belies the power hidden under the hood. DOCSIS 3.1 support with 2 downstream and 2 upstream OFDM channels promises twice the speed of a DOCSIS 3.0 modem, but it also offers 32x8 DOCSIS 3.0 support for backward compatibility, so it's capable of delivering solid performance even if your ISP doesn't offer gigabit speeds yet.
The two Gigabit Ethernet ports on the back also support 802.3ad link aggregation, so with the right Wi-Fi router you can use both ports to get 2Gbps of throughput all the way. With this kind of peak performance and great backward-compatible DOCSIS 3.0 support, even if your ISP doesn't yet support DOCSIS 3.1 it's a great future-proof option if you're in the market for a new cable modem and want to make sure you stay ahead of the curve.
"Although there are DOCSIS 3.0 cable modems that technically support speeds of 1Gbps or higher, chances are that your cable internet provider will cap out at 600Mbps over DOCSIS 3.0. If you want real gigabit fibre-optic class speeds you'll need to invest in a DOCSIS 3.1 cable modem."— Jesse Hollington, Tech Writer
Best Value:Motorola MB7621 24x8 Cable ModemBuy on AmazonBuy on Best BuyBuy on WalmartWhat We Like
Easy setupWhat We Don't Like
No voice capabilities
Motorola's MB7621 is a really affordable cable modem that can pay for itself in only a few months with the money that you'll save by returning your rental modem, and thanks to its 24x8 DOCSIS 3.0 channel support it will easily handle the fastest internet plans of today, with support for upload speeds of up to 246Mbps and download speeds theoretically capable of reaching 1Gbps, although you'll only get 600Mbps from most major cable providers.
Like all of Motorola's cable modems, the MB7621 is a solid and reliable workhorse, with a full-band capture digital tuner that will guarantee you get a fast and stable internet connection. A single Gigabit Ethernet port on the back gives you a full-speed connection to your wireless router, although it lacks support for voice services.
The MB7621 also features an attractive low-profile design that means you can leave it in plain sight without the risk of it looking like an eyesore, and it won't take up much space. It's also certified for use with all major cable providers, including Comcast Xfinity for speeds of up to 600Mbps and Charter Spectrum and Cox for 400Mbps plans, so you can have it up and running out of the box in mere minutes.
Best for Voice Services:Netgear Nighthawk CM1150V Cable Modem with VoiceBuy on AmazonBuy on Best BuyBuy on WalmartWhat We Like
DOCSIS 3.1 Support
Up to 2Gbps Download Speeds
Supports Xfinity Voice serviceWhat We Don't Like
Lacks a built-in router
Not compatible with other cable voice services
There are a lot of great options out there for high-performance cable modems, but if you're also using your ISP's voice services, your options will be slightly more limited, as you'll need one that also includes a built-in voice gateway. Fortunately, Netgear has you covered with its Nighthawk CM1150V, a high-performance DOCSIS 3.1 cable modem that offers outstanding speeds and support for up to two Xfinity phone lines.
With the latest DOCSIS 3.1 technology, the CM1150V includes 2x2 OFDM channels offering download speeds of up to 2Gbps—providing of course that your cable provider supports it. However, it's also backward compatible with DOCSIS 3.0, offering great 32x8 channel performance—more than enough for the fastest cable ISPs. So while the CM1150V doesn't come cheap, it's also clearly an investment for the future.
Naturally, at these speeds a standard Gigabit Ethernet WAN port won't cut it, so the CM1150V offers a pair of ports that support 802.3ad link aggregation, so as long as you have a compatible Wi-Fi router you can get a full 2Gbps of throughput into your home network simply by hooking up a pair of Ethernet cables. It's also built to support all of Xfinity's enhanced voice service features, including three-way conference calling, caller ID, call forwarding, and more.
Best for Smaller Homes:Netgear C6250 Dual-Band AC1600 Router with DOCSIS 3.0 Cable ModemBuy on AmazonBuy on Best BuyBuy on WalmartWhat We Like
USB sharingWhat We Don't Like
Limited Ethernet ports
Netgear's C6250 is an affordable cable modem with a built-in Wi-Fi router that can provide up to 1,500 square feet of reliable coverage through your home. Featuring 802.11ac dual-band Wi-Fi and DOCSIS 3.0 support, this cable modem/router combo can deliver download speeds of up to 680Mbps, letting you stream 4K videos around the home without missing a beat.
Compatible with all of the major cable providers, the C6250 also boasts the simplified setup that Netgear products are known for, letting you get up and running with a simple call to your cable provider rather than an on-site visit. 16x4 DOCSIS 3.0 channels offer solid throughput that's ideal for cable packages with speeds up to 300Mbps. There are also two Gigabit Ethernet ports to hardwire in your PC or game console, although that's a small number for a device that doubles as a router, which means you'll need to add your own Ethernet hub or switch if you have more than two wired devices. There's also a USB 2.0 port for connecting an external hard drive or printer to share on your network.The 7 Best Netgear Routers of 2021
Best Budget:Netgear CM500 DOCSIS 3.0 16x4 Cable ModemBuy on AmazonBuy on Best BuyBuy on WalmartWhat We Like
Great speed for priceWhat We Don't Like
The CM500 is a simple yet smart modem that can handle speeds up to 680Mbps, which means it can handle almost any connection you throw at it. Compatible with Microsoft Windows 7, 8, 10, Vista, XP, 2000 and macOS, this modem can work with just about any computer. It also is compatible with most cable internet providers, including Comcast Xfinity, Time Warner Cable, Charter, Cox and more.
It does not, however, work with bundled voice services that some people still use with cable bundles. When it comes to raw functionality, the CM500 can support 16 downloads and four uploads simultaneously. It can support HD and 4K video streaming, too. And all of this comes in at an affordable price that will save you money on a monthly rental.
Best Features:Motorola MG7550 DOCSIS 3.0 16x4 Cable Modem/RouterBuy on AmazonBuy on Best BuyBuy on WalmartWhat We Like
Fast, reliable speed
Security and parental control featuresWhat We Don't Like
A little bulky
The MG7550 delivers the speed you'd expect from a modern unit, plus some cool proprietary capabilities. First, the modem: This DOCSIS 3.0 device gives you 16 downstream channels alongside four upstream, plus a Wireless Power Boost to amplify the wireless signal to increase speed and range.
The wireless router is no slouch either, offering two bands at 2.4GHz and 5GHz, plus AnyBeam technology that focuses the connection based on your wireless client. Anyone trying to connect will have a reasonably customized focus for a more stable connection. The router also features a firewall and parental control features. There are four Ethernet ports on the back and the indicator lights are extremely bright to better show when it's working or not.The 9 Best Cable Modem/Router Combos of 2021Final Verdict
Arris' Surfboard SB6190 offers the best balance of price, performance, and size for most cable internet subscribers, but breaking past 1Gbps speeds will require a high-performance DOCSIS 3.1 modem like Motorola's SB8600.
About Our Trusted Experts
Jesse Hollington is a freelance writer with over 10 years of experience writing about technology and three decades of experience in information technology and networking. He's installed, tested, and configured just about every type and brand of router, firewall, wireless access point, and network extender in places ranging from single-family dwellings to office buildings.
What's the difference between DOCSIS 3.0 and DOCSIS 3.1?DOCSIS, which is a short form for “Data Over Cable Service Interface Specification,” is the technology on which all cable modems are based. DOCSIS 3.0 is the standard currently being used by pretty much all cable providers, but although it offers theoretical speeds of up to 1Gbps, most ISPs in the U.S. don't go beyond 600Mbps using DOCSIS 3.0. That means that to get true multi-gigabit plans, you'll need a DOCSIS 3.1 cable modem, but don't worry if your ISP doesn't support the newer standard yet, as all DOCSIS 3.1 modems are fully backward compatible with DOCSIS 3.0, so you can buy one now to be ready for when those faster speeds do come along.
What happens if my cable modem breaks down?While it's true that one of the advantages of renting your cable modem from your ISP is they'll easily swap it out if you have any problems—something that won't be an option if you've bought your own—the fact is that modern cable modems are very reliable as long as you go with a trusted brand, and almost all of them also come with 1–2 year warranties.
What about cable modem/router combos?If you're in the market for a new wireless router anyway, then it might be worth considering one of the best cable modem/router combos instead, since you'll get the best of both worlds in a much more affordable package, but there's rarely any good reason to go that route if you're perfectly happy with the Wi-Fi router that you already have, as any cable modem should work just fine with any relatively modern router.
What to Look For in a Cable Modem
The world is becoming increasingly connected, and it's more important than ever to make sure that you have a decent connection in your home. Not only does that mean ensuring you're subscribed to a fast internet service, but it also means making sure you have the right hardware to provide a fast and stable connection whenever you need it.
There are two main components to a decent home internet network: a modem and a router. The modem is what converts a cable signal from your internet service provider (ISP) into something that a digital device like a computer can understand. The router then takes that signal and beams it out through Wi-Fi, which is how you get wireless internet connectivity in your home.
Of course, there are a ton of things to consider when buying a modem. Sometimes, for example, you won't even need or want to buy a modem, as you'll be able to rent one directly from your ISP. Other times, it will make more financial sense to buy your own. Then, you'll need to think about whether you want a modem/router combo and what features you want from your modem—including whether it adheres to modern connection protocols, the number of channels that it offers, and how quickly it can upload and download files.
Whether you think you know everything you need to or you're starting from scratch, here are all the features you should keep in mind while buying a modem.
When Should You Rent Your Cable Modem?
Before diving into the features to consider when buying a modem, it's worth considering the possibility that you could simply rent one from your ISP. The modems on offer by ISPs are generally decent in quality (though not as good as the modems you could buy), plus going with a rental saves you from doing the legwork of finding one on your own.
Generally, though, we recommend against renting a modem and router from your ISP. Since the rental often comes out to between $10 and $15 per month, you can save more money by purchasing your own. For example, if you bought a modem/router combo for just $75, you can easily recoup your costs in less than a year.
There are other advantages to buying your own modem. For starters, the modems that you can rent from your ISP are usually on the older side, and may not offer as fast or as stable of a connection as you could get with something more modern. Most of the time, ISP routers lack features, and they prevent you from getting much control over your home network, which might be important if you want to tweak your network's settings.
That doesn't mean that there aren't situations in which you should rent a modem. For starters, if you're not very tech-savvy or don't like having to troubleshoot problems, then renting a modem may be the way to go, as you'll often get full repair services from your ISP.
For most, we recommend buying your own modem and router. You'll get much more control over your home network, and after a few years, you'll have recouped the cost of the devices that you would have otherwise had to rent.
Types of Cable Modem
There are two main types of cable modem: a standalone modem and a router/modem combo. There are advantages and disadvantages to both of these options, which we've outlined below.
A standalone modem is the route we recommend for most people. First of all, if a new wireless technology comes along — and it often does — buying a separate modem and router means that you'll only need to replace one of them at a time. On top of that, buying dedicated devices gives you a lot more flexibility because they often offer more options and features than a combination device.
So what are the disadvantages of buying a router and modem separately? Well, for starters, with two devices, you'll need to deal with more wires and set aside more space in your house. In other words, it's a slightly less clean setup, although, for the performance-minded, that may not matter too much.
While we generally recommend that most people buy a standalone modem and standalone router separately, there is a case to be made for combination devices. For example, if you simply want to plug in the device without tweaking the settings—and don't anticipate needing to in the future—then a modem/router combo might be the right choice for you. These devices have been getting better over the past few years, too, so you should be able to get by perfectly fine with the factory settings and options of a combination device.
No matter what you decide on, it's worth reading up on the features on offer by the router part of a combination device or the router you might buy separately. Take a look at our router buying guide and our roundup of the best cable modem/router combos.
Other Features and Considerations
Once you've decided on the type of modem or router to get, it's time to think about some of the other features that your modem might have. These features can have a significant impact on the overall performance of your modem, so it's worth getting acquainted with them.
As you might expect, more expensive modems offer features to deliver faster speeds. The maximum speed that your modem can deliver has a whole lot to do with the"Data Over Cable Service Interface Specification,"or DOCSIS, protocol. DOCSIS is essentially the standard by which all modems provide internet access over cable. The most recent standard is DOCSIS 3.1, which is capable of providing speeds of up to a whopping 10Gbps.
You don't necessarily need the latest and greatest standard to get good internet speeds, however. Even DOCSIS 3.0 offers some pretty fast speeds—maxing out at a cool 1Gbps, which is more than fast enough for the vast majority of users.
Unfortunately, ISPs have confused things a little. Only a few ISPs offer 1Gbps speeds over DOCSIS 3.0; for most you'll need to go with a DOCSIS 3.1 modem to get anything beyond around 630Mbps. Thankfully, however, DOCSIS 3.1 is backward compatible, meaning that if you have a modem that supports DOCSIS 3.1 and an ISP that only supports up to DOCSIS 3.0, you'll still be fine, plus you'll already have a modem that's ready to go when your ISP eventually does roll out DOCSIS 3.1 support.
If your ISP does support DOCSIS 3.1, we definitely recommend buying a modem with support for the standard. You may not need it now, but, as time moves on and faster data plans become available, you'll want a modem that supports the faster speeds.
The only downside to buying a modem that supports the newer standard is that it may be a little more expensive. Providing your ISP supports the newer standard, we think it's a price worth paying. Note that you might run into modems that only support up to DOCSIS 2.x or even DOCSIS 1.x. We recommend steering clear of these models altogether as they're not only slower, but less secure.
The DOCSIS standard isn't the only thing that affects the speeds you can achieve with your modem. The number of download and upload channels is also a big factor.
Download and upload channels are expressed as a number “x” another number, where the first number is the number of download channels and the second number the number of upload channels. So, for example, a 16x4 modem has 16 download channels and four upload channels.
DOCSIS 3.0 and later allows for up to 43Mbps download on each channel—so a modem with four download channels will get up to 172Mbps, a modem with eight download channels will get 344Mbps, and a modem with 16 download channels will get 688Mbps. DOCSIS 3.0 will get you 31Mbps upload speed per channel.
We recommend getting a modem with at least eight download channels and four upload channels (sometimes describes as"8x4") as a bare minimum, although if you can afford one with more of each, it certainly can't hurt, since you'll need enough channels to match your internet plan. If you've got a 600Mbps or faster plan, or think you may upgrade to one someday, you'll want at least a 16x8 DOCSIS 3.0 configuration, for example.
Note that DOCSIS 3.1 channels are much faster, with each downstream channel offering 1.89Gbps download speeds, and each upstream channel coming in at 0.94Gbps, so don't let the lower number of channels on a DOCSIS 3.1 modem concern you—even a 1x1 DOCSIS 3.1 modem is significantly faster than a 32x8 DOCSIS 3.0 modem.
It's important to note, however, that just because you have a modem that theoretically supports up to 688Mbps (on a modem with 16 downstream channels), that doesn't mean that you'll achieve that speed. You might only be subscribed to a data plan from your ISP that offers up to 100Mbps, in which case that's the maximum you'll get from your modem—if you even reach that.
Upload and Download Speeds
While the DOCSIS standard and number of channels have a significant impact on the download and upload speeds a modem offers, modem manufacturers still normally list the maximum download and upload speeds that their modems can handle, making it easier to determine how fast a device will be without having to calculate the number yourself.
So what's a good download speed? Well, it really depends on your usage, but more is better. While the average download speed in the United States is 64.17Mbps, that number is likely to rise in the near future as ISPs roll out Gigabit internet speeds. Because of that, we recommend getting a modem that has at least a 1Gbps download speed. It means you'll be ready for faster internet once it rolls out.
So what do those speeds mean? Well, to download a Full HD movie with a file size of 4.5 GB, it'll take 4 minutes to download a movie with a 50Mbps download speed, and 2 minutes on a 100Mbps download speed. With a 1Gbps download speed, it'll take 12 seconds.
Compatibility with Your ISP
Before buying a modem, it's worth double-checking that the modem you're interested in is compatible with your ISP. Unfortunately, not all modems are supported by every ISP. Most ISPs will have a list of compatible modems on their website, or, at the very least, you should be able to contact customer service to find out.
If you surprise to voice services from your ISP, such as Xfinity from Comcast Internet with Voice, you'll also need to make sure that the cable modem you purchase supports your provider's voice services. While it's theoretically possible to run your old voice-capable cable modem in parallel with a newer, high-performance modem, this can get messy and it's not supported in every case. Besides, the main point of buying a cable modem is so you don't have to keep paying rental fees for the old one.
The Ethernet port is how your cable modem will communicate with other devices in your home. Because of that, you might think you need a modem with multiple ports, but, on the contrary, for the most part a standalone modem only needs one Ethernet port.
The single Ethernet port on your modem is where you'll connect the router, which will then beam out a Wi-Fi signal. The router itself will usually also have its own Ethernet ports, so if you need a wired connection for things like smart home hubs, or you simply want to connect your computer via an Ethernet port, the router is where you'll do that.
The only exception to this is some of the newer DOCSIS 3.1 modems, which provide two Ethernet ports to support a feature called 802.3ad link aggregation. Since most Ethernet ports still only support Gigabit speeds, link aggregation lets you connect two Ethernet cables between your modem and your router in order to get a total of 2Gbps of combined throughput. Of course, this is only important if you have an internet plan that's faster than 1Gbps, and it's important to keep in mind that your router also has to support the same 802.3ad standard.
Ultimately, the design of your modem probably takes a backseat to performance and speed, but that doesn't mean you should ignore design altogether. After all, the device will be in your home, and it may very well be out in the open, since you'll be stuck putting it wherever your coaxial cable comes into your home.
There's not too much to say about what makes a great design when it comes to a modem. Design is really subjective, so a good-looking modem will vary from person to person.
We recommend that you look for a modem that has all the features you want, but if there are a few, and they're all within your price range, it can't hurt to get the one that looks the best.
Brands To Consider
There are a number of companies that make cable modems, and they're not all created equal. We generally recommend getting a modem from a brand that has a proven track record when it comes to networking equipment. For example, you might want to consider brands like Netgear, Motorola, Linksys, TP-Link, and Arris. If you're purchasing a cable modem/router combo, you may also want to lean toward a company that has a stronger background in producing Wi-Fi routers rather than just cable modems.
When buying a modem, different brands might offer different warranties. Some companies offer a warranty of up to two years, while others stick with one year. We recommend going with a company that offers a two-year warranty—like TP-Link or Motorola—even though it's unlikely that anything will happen to your modem. One company that notably only offers a one-year warranty is Netgear, despite the fact that the company does make excellent equipment.
As you can see, there are a number of things to keep in mind when buying a cable modem. Hopefully, however, it's now a little easier to find the right modem for your needs.
In case it's not, we have a few recommendations. We think it's worth buying a dedicated modem and router separately. It's a good idea to buy a modem that supports DOCSIS 3.1, even if you don't think you need the improved speeds yet, and we think most should go for a modem that offers at least eight download channels and four upload channels over DOCSIS 3.0. For those who can afford it, and those who want to ensure they get better speeds, buying a device with 16, 24, or even 32 download channels might be even better.
Thankfully, there are plenty of modem options out there, so no matter what your budget or the features that you want, it's possible to find something that's perfect for your needs.