Cable Modem FAQs

Can I use a Zoom Cable Modem with my Cable Company’s Internet service?

Zoom cable modems are certified by the official testing authority used by cable services throughout the United States, CableLabs®. Some cable services also require additional testing to certify use for their services, and Zoom arranges for this testing as well.

Most cable modem services provide significant savings, typically about $90 per year, for subscribers who purchase rather than rent a cable modem. Comcast®, Cox®, Time Warner Cable®, Bright House® and most other cable service providers offer a savings; but Mediacom®, Charter® and Cablevision®currently do not.

The Zoom Model 5341J DOCSIS 3.0 cable modem and the 5352 DOCSIS 3.0 Cable Modem/Router with Wireless-N are certified by every major service that rents cable modems.

The recently-released Model 5363 Cable Modem/Router with Wireless-AC is certified for use with Comcast and Time Warner Cable. Other certifications will follow.

What is a Cable Modem?

A Cable Modem is a device that connects your computer or other devices to the Internet over cable television (CATV) cables. Cable Modems use special channels on these cables that are dedicated to Internet service. You need to arrange for Internet service from your cable service provider in order to connect to the Internet with your Cable Modem.

Cable Modem Internet connections are always on. Whenever your computer is on, it will connect to the Internet instantly.

Cable Modem Internet service can provide fast and reliable Internet connections for all contemporary needs, including streaming media such as TV shows, movies, videos and music, high intensity gaming, and large file transfers such as photos. Cable Modem Internet service also facilitates fast navigation of complex websites, and near instantaneous delivery of email and other messaging services.

What is the benefit of using a Zoom Cable Modem?

Zoom Cable Modems are designed to provide reliable service at very high data rates, much faster than the speeds available from any US service provider. In addition, Zoom’s cable modems that include Wi-Fi compatibility typically have high speeds and significant range. In the unlikely event that you need help, Zoom’s excellent customer support team is ready to help from our headquarters in Boston.

Many cable service providers charge a monthly rental fee – typically adding up to about $90 per year – for Cable Modems that they provide to you. By purchasing and installing a Zoom Cable Modem, you can save this monthly rental fee. Over a relatively short period, you may be able to save many times the cost of your Zoom Cable Modem.

What are the differences between Zoom Models 5352, 5341J, and 5363?

The main differences are whether a wireless-N router or a higher-speed wireless-AC router is included with the DOCSIS 3.0 cable modem. Model 5352 includes a wireless-N 4-port router, Model 5363 includes the latest in high-speed wireless networking with a wireless-AC 4-port router, and the model 5341J does not include a router or wireless networking. The 5341J can be used with a separate router or wireless access point if you already own those devices.

For more details, please click here.

What is DOCSIS and how will it benefit me?

DOCSIS – Data Over Cable Service Interface Specification – is a Cable Modem standard developed by Cable Modem vendors and cable system operators. When cable operators began offering data over cable service many years ago, there were no standards in the industry. Cable services each required proprietary Cable Modems to work with their services. This created incompatibility issues.

The cable industry worked together to define a standard that would unify equipment specifications and allow interoperability of equipment across the United States. The governing body, which certifies Cable Modem vendors, is called Cable Television Laboratories or CableLabs. The DOCSIS standard and close derivatives have been adopted in other countries around the world.

Currently, CableLabs is certifying DOCSIS 3.0 Cable Modems. Zoom DOCSIS 3.0 Cable Modems are backwards-compatible with earlier DOCSIS revisions 2.0 and 1.1.

Can I watch TV while using a Zoom Cable Modem?

Yes. Cable Modems use a separate "channel" for data. Of course, you can also use that data channel for Netflix and other TV services, some of which have a monthly service fee.

How do I log on to a cable Internet service provider?

You don't have to "log on." A great benefit offered in cable modems is the "always on" feature. Once the Cable Modem is turned on and registered with the cable service provider, you will enjoy an "always on" connection with no need to dial up or hang up. The Cable Modem should be left on and connected. It will be ready to serve your needs in an instant the next time you want to access the Internet.

Can I use a Zoom Cable Modem with my existing cable service?

Yes, for most service providers. Please see the discussion and list of cable service providers under the first FAQ entry above, Can I use a Zoom Cable Modem with my cable company’s Internet service?

What computer operating systems and devices can a Zoom Cable Modem interface with?

Zoom Cable Modems will connect to any computer or device that has an Ethernet port, including computers running any version of Windows, Mac OS, and Linux. Models 5352 and 5363 Cable Modems have a built-in wireless router for connection to wireless devices such as televisions, tablets, e-readers, handhelds, and phones. Model 5341J does not have built-in router functionality, but can connect to a router easily through its Ethernet port

What ports do I need on my computer to connect to a Zoom Cable Modem?

You can connect any Zoom Cable Modem to any computer, device, or router that has an Ethernet port. You can also connect Zoom Models 5352 and 5363 to any computer, phone, or other device that has Wi-Fi compatibility.

What support does Zoom offer its Cable Modem customers?

Founded in 1977, Zoom has many years of experience supporting users who connect to the Internet. Our support begins with intuitive user manuals and includes experienced support specialists based in Boston.

Do I need cable TV to get High-Speed Internet Service?

No. Although there are usually discounts for customers who subscribe to both cable TV and High-Speed Internet Services, you are normally not required to purchase cable TV service to get High-speed Internet Services.

Can I use my phone at the same time?

Yes. Cable Modem service doesn’t interfere with your telephone service, including telephone service provided by your cable company.

If my house isn't wired for cable,how do I get set up?

If your home hasn't been wired for cable TV or cable modem service, you will need to arrange this with your cable company when you sign up for service. A cable technician will wire your home as needed when he or she sets up your service. There may be an additional charge.

Is there a special connection for the cable modem?

No. The cable modem can connect to the same type of coaxial cable connector that’s used for cable TV. Sometimes a splitter is used, so that a TV and cable modem can connect at the same place.

For more information, please see "Can I install a Zoom Cable Modem myself?" below.

Can I install a Zoom Cable Modem myself?

Zoom’s cable modems come with clear instructions, and cable modem service often provides a useful starter kit that describes installation. You will connect the cable modem to a cable jack and to power via the cable modem’s power cube.

Can I have more than one computer connected to my Cable Modem?

Yes. Connect your Cable Modem to a router, and then connect your computers to the router. The standard way to connect your computers to the router is via Ethernet cables. If you use a wireless router, you may connect your computers to the router via their wireless interfaces. The Model 5352 and 5363 have a wireless router built-in, which saves space, improves reliability and reduces cord and wiring clutter.

Does my computer need to be in the same room as my TV?

No. Your computer can be located almost anywhere in your home.


The CL CABLELABS CERTIFIED and Design mark, and the terms “CableLabs Certified” or “Certified by CableLabs” are certification marks of Cable Television Laboratories, Inc. and cannot be used without authorization of Cable Television Laboratories, Inc.


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