When it comes to choosing the best DOCSIS 3.1 modem for Xfinity, there are several factors to consider. Firstly, you need to ensure that the modem is compatible with Xfinity's network. Secondly, you need to look for a modem that offers high-speed internet connectivity and is capable of handling multiple devices simultaneously. Thirdly, you need to consider the price of the modem and whether it offers good value for money. Fourthly, you need to look for a modem that is easy to set up and use. Finally, you need to consider the brand reputation and customer reviews to ensure that you are buying a reliable and durable modem.
To summarize, when looking for the best DOCSIS 3.1 modem for Xfinity, you should consider compatibility, speed, price, ease of use, and brand reputation. By taking these factors into account, you can find a modem that offers fast and reliable internet connectivity, is easy to use, and offers good value for money. Ultimately, choosing the right modem can make a significant difference in your internet experience, so it is important to do your research and choose wisely.
10 Best Docsis 3.1 Modem For Xfinity
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1. Motorola Mb8600 Docsis 3.1 Cable Modem For Comcast Xfinity, Cox, And Charter Spectrum, Supports Up To 1000 Mbps Plans With 1 Gbps Ethernet Port.
The Motorola MB8600 DOCSIS 3.1 Cable Modem is a top-of-the-line cable modem that offers top internet speeds for all multi-gigabit speed tiers. This model has been recommended by Wirecutter as the best cable modem for people using gigabit internet plans. It boasts built-in DOCSIS 3.1 and DOCSIS 3.0 32×8 capabilities, which give top internet speeds for all cable internet services.
One of the key benefits of the Motorola MB8600 is that it can help you save money. By eliminating up to $168 per year in cable modem rental fees, this model can pay for itself in just a few months. It is approved by Comcast Xfinity and Xfinity X1, Cox, and CableOne for all speeds, including Comcast Gigabit services and Cox Gigablast. However, it is not compatible with RCN. It is important to note that no cable modem is compatible with fiber optic, DSL, or satellite services, which are available from Verizon, AT&T, CenturyLink, Frontier, and others.
The Motorola MB8600 is also highly flexible in terms of compatibility. It can be paired with any Wi-Fi router, including Whole Home Wi-Fi or Mesh routers like eero, Google Wi-Fi, and Orbi. The modem features a 10/100/1000 Gigabit Ethernet port that allows connection to any single device with an Ethernet port, including a router, Windows or Mac computer, HDTV, or game station. However, it does not have a built-in wireless router or telephone call capability.
Another key feature of the Motorola MB8600 is its proactive network security. The modem's Broadcom chipset provides advanced security from denial-of-service attacks, giving you peace of mind that your home network is secure. Additionally, the modem features active queue management (AQM), which significantly reduces internet latency on both DOCSIS 3.1 and 3.0 services, resulting in faster page loads for all web traffic and enhanced interactive applications like online gaming and video conferencing. The MB8600 also includes a full-band capture digital tuner to enhance speed and save energy.
Overall, the Motorola MB8600 DOCSIS 3.1 Cable Modem is a top-performing cable modem that offers a wide range of features and benefits. It is compatible with many different internet service providers and Wi-Fi routers, making it a flexible option for a variety of households. Its built-in security features and AQM technology make it a smart choice for those who prioritize network security and fast internet speeds.
2. Arris Surfboard G34 Is A Docsis 3.1 Modem And Wi-Fi 6 Router With Four 1 Gbps Ports, Approved For Major Isps Including Comcast Xfinity, Cox, And Spectrum. It Offers Up To 1 Gbps Internet Speeds And Comes With A 2-Year Warranty.
The ARRIS Surfboard G34 DOCSIS 3.1 Gigabit Cable Modem & Wi-Fi 6 Router (AX3000) is a two-in-one product that offers high speeds, low latency, and increased network capability for ultra-fast streaming and downloading throughout your home. With over 260 million modems sold and growing, ARRIS is a trusted name in home connectivity.
One of the biggest advantages of owning the ARRIS Surfboard G34 is the ability to save money. By owning your modem, you can reduce your cable bill up to $168 per year in cable modem rental fees (savings vary by cable service provider). The modem is certified for use with most U.S. cable internet service providers, making it a versatile option for many households.
The DOCSIS 3.1 technology is the newest available from cable internet providers, providing 10x faster speeds than DOCSIS 3.0, better security, reduced lag while gaming, and the ability to run multi-gig networking on your copper cable from your internet provider.
Setting up the ARRIS Surfboard G34 is simple and secure. Just plug it in, download the SURFboard Central App, and follow the step-by-step instructions to activate the modem, set up and customize your Wi-Fi network, and add devices to your home network. The app provides real-time monitoring of the devices on your network, enhanced parental controls, and much more.
The SURFboard G34 is compatible with major U.S. cable internet providers, including Cox (Gigablast), Spectrum (Internet Gig), Xfinity (Gigabit/Gigabit x2), and others. It's approved for cable internet speed plans up to 1 Gbps, making it a great option for households with high internet usage.
The router technology features four 1-Gigabit ethernet ports and delivers Wi-Fi 6 speeds up to 3 Gbps (3,000 Mbps). Additionally, dedicated customer support is available via live chat and phone support from 8am to 1am EST.
The product ships with a 2-Year Limited Warranty provided by ARRIS, giving customers peace of mind with their purchase. Overall, the ARRIS Surfboard G34 DOCSIS 3.1 Gigabit Cable Modem & Wi-Fi 6 Router (AX3000) is a reliable and versatile option for households looking to increase their network capability and save money on their cable bill.
3. Refurbished Netgear Cm1000-1aznas Gigabit Cable Modem With Docsis 3.1 For Xfinity And Cox, Supports Gig-Speed From Xfinity.
The Netgear Gigabit Cable Modem (32×8) DOCSIS 3.1 is a renewed product that can support all cable internet speed tiers, up to Gigabit (1000 Mbps) service. It is compatible with XFINITY by Comcast, Cox, and Gig-Speed from Xfinity. However, a separate router is required for Wi-Fi connectivity.
This modem is designed to provide up to 10x faster download speeds than DOCSIS 3.0, thanks to its DOCSIS 3.1 technology that uses OFDM 2×2+ DOCSIS 3.0 32×8 channel bonding. It can help eliminate monthly cable modem rental fees that can cost up to $156 per year. Moreover, the modem meets DOCSIS 3.1 specifications and is backward compatible with DOCSIS 3.0 networks.
To use this modem, you need to have cable broadband internet service. It is recommended to check your cable internet service provider's web site for data speed tier compatibility and to ensure that it provides DOCSIS 3.1 service. Otherwise, this modem will only work as a DOCSIS 3.0 modem. Additionally, this modem is compatible with Microsoft Windows 7, 8, 10, Vista, XP, 2000, Mac OS, or other operating systems running a TCP/IP network. It also works with Microsoft Internet Explorer 5.0, Firefox 2.0, Safari 1.4, or Google Chrome 11.0 browsers or higher.
However, it is important to note that the CM1000-1AZNAS is not compatible with Verizon, AT&T, or CenturyLink. It is also not compatible with cable bundled voice services.
Overall, the Netgear Gigabit Cable Modem (32×8) DOCSIS 3.1 is an excellent choice for cable internet users who want to enjoy faster download speeds and eliminate monthly rental fees. Its DOCSIS 3.1 technology and backward compatibility with DOCSIS 3.0 networks make it a reliable and flexible choice for various cable internet service providers.
4. Netgear – Nighthawk 32 X 8 Docsis 3.1 Voice Cable Modem, Voice Support – Black (Renewed)
The NETGEAR Nighthawk 32 x 8 DOCSIS 3.1 Voice Cable Modem is a reliable and high-speed cable modem that is certified by Comcast for Xfinity internet and voice services. It is not compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH, and non-Xfinity voice services.
By replacing your cable modem with the CM1150V model, you can save up to $150 per year in equipment rental fees. This modem is built for ultimate speed and is best for cable provider plans up to 2 Gigabits speed. It works with any WiFi router, allowing you to connect any wireless device to the modem's ethernet port.
This modem offers versatile connections with 4 Gigabit Ethernet ports that give you fast wired connections to your computer, separate WiFi router, printer, game box, and other devices. It also provides voice phone support for use with Xfinity Voice service and up to 2 telephone lines with enhanced call features, including caller ID, 3-way conference calling, call forwarding, and more.
The modem technology is engineered with 32×8 channel bonding, OFDM 2×2, and DOCSIS 3.1. It is compatible with various operating systems such as Windows 7, 8, 10, Vista, XP, 2000, and Mac OS. It also works with various web browsers, including Microsoft Internet Explorer 5.0 or Later, Firefox 2.0 or later, Safari 1.4 or Later, and Google Chrome 11.0 or Later.
Additionally, the NETGEAR Nighthawk 32 x 8 DOCSIS 3.1 Voice Cable Modem comes with multi-gig Ethernet, which allows the link aggregation of two 1G ports into one 2G port for faster wired Ethernet speed.
In summary, the NETGEAR Nighthawk 32 x 8 DOCSIS 3.1 Voice Cable Modem is a reliable and high-speed cable modem that is compatible with Xfinity internet and voice services. It saves you money by replacing your cable modem and offers versatile connections, voice phone support, and multi-gig Ethernet for faster wired Ethernet speed.
5. Humax Hgd310: Docsis 3.1 Cable Modem For Xfinity & Spectrum, Max Speed 2000 Mbps.
The HUMAX HGD310 is a DOCSIS 3.1 Cable Modem that is approved for use with Xfinity and Spectrum. With its ultrafast streaming capabilities, it is the ideal product for gigabit internet service. However, it is important to note that if you want to connect additional devices to the second Ethernet port while the first Ethernet port is being used, you will need two IP addresses. Before connecting, it is crucial to contact your service provider to check your internet plans and packages.
The HGD310 Cable Modem supports the Link Aggregation feature, which allows users to maximize data speed up to 2Gbps using two Ethernet ports simultaneously. However, it is important to note that for this feature to work, your internet plan should be over 2Gbps, and the PC or router you want to connect must also support the Link Aggregation feature. Therefore, it is important to check your internet service status before usage.
The HGD310 Cable Modem boasts 32 downstream x 8 upstream for DOCSIS 3.0 channel bonding and 2 downstream x 2 upstream for DOCSIS 3.1 channel bonding. It is essential to note that the HGD310 Cable Modem is not compatible with DSL or Fiber internet service providers, such as AT&T, Verizon, and Century Link. Subscription of Cable Internet Service is required, and the HGD310 does not include Wi-Fi or support cable digital voice service.
The HGD310 Cable Modem comes with an Ethernet cable and an instruction booklet. It is easy to set up and use, making it a great addition to your home or office. With its ultrafast streaming capabilities and support for Link Aggregation, you can enjoy faster internet speeds and improved connectivity. Overall, the HUMAX HGD310 is a great investment for those in need of a reliable and fast DOCSIS 3.1 Cable Modem.
6. Arris T25 Docsis 3.1 Cable Modem For Xfinity Internet & Voice (Renewed)
The ARRIS SURFboard T25 DOCSIS 3.1 Gigabit Cable Modem is a top-of-the-line device that is perfect for Xfinity Internet and Voice users. This renewed product boasts impressive technology that allows for lightning-fast internet speeds and unparalleled connectivity.
The modem features 32 downstream x 8 upstream DOCSIS 3.0 channels and 2 downstream x 2 upstream OFDM DOCSIS 3.1 channels. This means that it is capable of delivering incredibly fast internet speeds up to 2 Gbps, making it ideal for households with multiple devices that require high-speed internet access.
The ARRIS SURFboard T25 DOCSIS 3.1 Gigabit Cable Modem also comes equipped with two 1-Gigabit Ethernet ports and 2 Telephony ports for Xfinity digital voice service, ensuring that users have access to reliable and high-quality voice services.
It is important to note that this product is certified to work with Xfinity Internet and Voice service only and is not certified for use with other cable internet service providers. Xfinity internet service is required, and the product does not include Wi-Fi.
Overall, the ARRIS SURFboard T25 DOCSIS 3.1 Gigabit Cable Modem is a top choice for Xfinity users who demand top-of-the-line technology and reliable connectivity. With its impressive speed capabilities and advanced features, this modem is sure to meet the needs of even the most demanding internet users.
7. Arris Surfboard Max Pro W133 Mesh Wi-Fi 6 & T25 Gigabit Modem For Comcast Xfinity Internet & Voice With 2 Gbps & 2 Telephony Ports.
The ARRIS Surfboard mAX Pro W133 Tri-Band Mesh Wi-Fi 6 System & T25 DOCSIS 3.1 Gigabit Cable Modem is a top-of-the-line networking product designed to provide unparalleled connectivity and speed. With over 260 million devices sold in home connectivity, ARRIS is a trusted name in the industry, and the Surfboard mAX Pro and T25 DOCSIS 3.1 modem live up to this reputation.
The Surfboard mAX Pro Mesh Wi-Fi system uses cutting-edge technology to deliver the fastest speeds throughout your home, both indoors and outdoors. The system virtually eliminates Wi-Fi dead zones in your house, on the 2nd/3rd floor, basement, or attic. It combines extensive mesh processing and the built-in benefit of Wi-Fi 6, which offers 400% faster speeds and range than Wi-Fi 5.
One of the key features of the Surfboard mAX Pro is its tri-band system, which creates three express lanes: one for connecting the routers, one for connecting slower 2.4 GHz devices, and one for faster 5 GHz devices. The system dedicates an express link to maintain your 1 Gbps connection between your routers (nodes), resulting in true gigabit speeds throughout your home. Each router has eight Wi-Fi 6 streams, delivering speeds for audio and video conferencing, HD and 4K video streaming, Alexa connectivity, online gaming simultaneously at speeds up to 11,000 Mbps, and up to 6,000 sq ft of coverage!
The Surfboard mAX Pro Mesh Wi-Fi system is bursting with premium components and technology, including a Tri-band (2.4GHz/5GHz/5GHz High) design and Wi-Fi mesh algorithms that ensure your devices and your network are always operating at peak performance. The mesh network will adjust to optimize your experience as you move around your house, launch streaming services, or use different devices. This significantly reduces buffering, delays on your devices, and high ping rate for gamers. The unique approach to maintain a 1Gbps connection within your system enables you to enjoy true gigabit speeds throughout your home.
The SURFboard Central app provides step-by-step instructions to set up, configure, and manage your network. Once set up is complete, the app provides real-time monitoring of the devices on your network, enhanced parental controls, such as setting time limits, pausing internet, QoS, guest network, parental control rules, and much more!
The ARRIS SURFboard T25 DOCSIS 3.1 Cable Modem is designed to bring you superior connectivity, increase your network capability, and provide faster streaming and downloading throughout your home. This cable modem is DOCSIS 3.1 technology, which is the newest technology available from cable internet providers. It is ten times faster than DOCSIS 3.0, provides better security, reduces lag while gaming, and enables multi-gig networking (ability to run fast speeds on your copper cable from your internet provider).
By owning your modem, you can save up to $168 dollars per year in cable modem rental fees. The T25 DOCSIS 3.1 modem is compatible with Xfinity Internet & Voice Service. The setup is simple and secure. Plug-in the device, download the SURFboard Central App, and follow the instructions to activate the modem. Connect to a Wi-Fi router for networking.
In conclusion, the ARRIS Surfboard mAX Pro W133 Tri-Band Mesh Wi-Fi 6 System & T25 DOCSIS 3.1 Gigabit Cable Modem is a reliable and efficient networking product that offers superior connectivity, faster speeds, and enhanced parental controls. With this product, you can experience true gigabit speeds throughout your home and virtually eliminate Wi-Fi dead zones. The setup is simple and secure, and by owning your modem, you can save money on cable modem rental fees.
8. Motorola Mt8733 Router + Cable Modem + 2 Phone Ports | Comcast Xfinity Compatible | Up To 2500 Mbps | Ax6000 | Docsis 3.1 | Smart Motosync App Included
The Motorola MT8733 WiFi 6 Router + Multi-Gig Cable Modem is a product that is compatible with Xfinity Internet & Voice service. It has been certified by Xfinity and works flawlessly with Xfinity Triple Play. However, it is not compatible with non-Xfinity voice services.
The product has multi-gigabit Internet speed, which delivers ultra-fast speeds up to 2.5 Gbps with next-generation DOCSIS 3.1 technology. It features one 2.5 Gigabit Ethernet port and three 1 Gig Ethernet ports. This means that users can enjoy superior internet speed and connectivity without any interruptions.
One of the best things about this product is that it can help users save money. It offers savings up to $168 per year on modem rental fees. This means that users can enjoy top-notch internet speed and connectivity without having to pay exorbitant rental fees.
The Motorola MT8733 WiFi 6 Router + Multi-Gig Cable Modem also offers ultra-fast AX6000 WiFi Performance (WiFi 6), which provides incredible speeds. It also ensures clear, uninterrupted calls. The product has 2 phone lines for use with Xfinity service. It delivers enhanced call features including caller ID, call forwarding, and conference calling.
Another great feature of this product is its smart mobile app. Users can set it up in minutes using the motosync app. They can manage, optimize, and secure their connected home from anywhere. This means that users can have peace of mind knowing that their home network is secure and optimized for their needs.
In conclusion, the Motorola MT8733 WiFi 6 Router + Multi-Gig Cable Modem is a fantastic product for anyone who wants to enjoy top-notch internet speed and connectivity without having to pay exorbitant rental fees. It is easy to set up, offers enhanced call features, and ensures a secure and optimized home network.
9. Netgear Nighthawk® Multi-Gig Speed Cable Modem (Cm1100) For Xfinity®, Spectrum®, And Cox Using Docsis® 3.1.
The NETGEAR Nighthawk® Multi-Gig Speed Cable Modem DOCSIS® 3.1 for XFINITY® by Comcast, Spectrum®, and Cox (CM1100) is a powerful device that delivers true multi-gig internet speeds with link aggregation support. It comes equipped with a built-in high-speed DOCSIS 3.1 channel bonding cable modem that ensures seamless connectivity.
The modem has two Gigabit Ethernet ports with auto-sensing technology that can support multiple devices with ease. This feature allows users to connect their gaming consoles, laptops, smart TVs, and other devices to the internet without any lag or interruption.
The DOCSIS 3.1 standard provides up to 10X faster download speeds than DOCSIS 3.0, making it perfect for streaming high-definition movies, online gaming, and other bandwidth-intensive tasks. This feature ensures that users can enjoy uninterrupted internet access without any buffering or lag.
The NETGEAR Nighthawk® Multi-Gig Speed Cable Modem DOCSIS® 3.1 (CM1100) is designed to deliver maximum speed and performance. It has 2 OFDM downstream and 2 OFDMA upstream channels that ensure seamless connectivity across all devices.
The modem is compatible with XFINITY® by Comcast, Spectrum®, and Cox, making it a versatile device that can be used with multiple internet service providers. It is easy to set up and install, ensuring that users can get connected to the internet in no time.
Overall, the NETGEAR Nighthawk® Multi-Gig Speed Cable Modem DOCSIS® 3.1 (CM1100) is a powerful device that delivers true multi-gig internet speeds. It is perfect for users who need high-speed connectivity for streaming, online gaming, and other bandwidth-intensive tasks. Its compatibility with multiple internet service providers makes it a versatile device that can be used by a wide range of users.
10. Netgear Nighthawk Cm1150 Cable Modem With Voice – Xfinity Certified, 800mbps, 2 Phone Lines, 4x1g Ethernet Ports, Docsis 3.1.
The NETGEAR Nighthawk Cable Modem with Voice (CM1150) is a high-performance cable modem certified for use with Xfinity by Comcast Internet and Voice plans. With the ability to support internet speeds up to 2Gbps and Xfinity Internet & Voice Plans up to 800Mbps, this modem is an excellent choice for households that require reliable and fast internet connectivity. However, future speed with Xfinity is subject to change.
The CM1150V is also designed to work with any WiFi router, making it easy to connect all of your wireless devices. And, with four Gigabit Ethernet ports, you can connect your wired devices like computers, printers, and game boxes for fast internet connectivity.
One of the biggest advantages of the NETGEAR Nighthawk Cable Modem with Voice is that it can save you money on rental fees. By replacing your cable modem with the CM1150V, you can save up to $150 per year on equipment rental fees.
The modem is engineered with 32×8 channel bonding, OFDM 2×2, and DOCSIS 3.1 modem technology, which ensures fast and reliable internet connectivity. Additionally, the modem features multi-gig Ethernet technology, which combines two 1G ports into one 2G port for faster wired Ethernet speeds.
The CM1150V is also designed to work with Xfinity Voice service and can support up to two telephone lines with enhanced call features, including caller ID, 3-way conference calling, call forwarding, and more.
In summary, the NETGEAR Nighthawk Cable Modem with Voice (CM1150) is a high-performance cable modem that is certified for Xfinity Internet and Voice plans. It is designed to support internet speeds up to 2Gbps and Xfinity Internet & Voice Plans up to 800Mbps. The modem is also engineered with advanced technologies that ensure fast and reliable internet connectivity. With the ability to save you money on rental fees and support multiple wired and wireless devices, the CM1150V is an excellent choice for households that require fast and reliable internet connectivity.
Best Docsis 3.1 Modem For Xfinity FAQs
Are there any budget-friendly DOCSIS 3.1 modems that are compatible with Xfinity?
Yes, there are several budget-friendly DOCSIS 3.1 modems that are compatible with Xfinity. Some popular options include the Netgear CM1000, the Motorola MB8600, and the Arris SB8200. These modems are typically priced between $150 and $200, making them a more affordable option compared to some of the higher-end models on the market.
When shopping for a DOCSIS 3.1 modem, it is important to ensure that it is compatible with your internet service provider, in this case, Xfinity. You can typically check the compatibility on the modem manufacturer's website or by contacting Xfinity customer support.
Overall, purchasing a budget-friendly DOCSIS 3.1 modem can be a smart investment as it can help you save money in the long run by avoiding rental fees from your internet service provider.
How do I know if a DOCSIS 3.1 modem is compatible with Xfinity's network?
To determine if a DOCSIS 3.1 modem is compatible with Xfinity's network, you can check the list of approved modems on Xfinity's website. The list includes models that have been tested and certified to work with Xfinity's network, ensuring reliable and optimal performance.
It's important to note that not all DOCSIS 3.1 modems are compatible with Xfinity's network, as there are different specifications and configurations that may not be supported. It's recommended to choose a modem from the approved list to avoid any compatibility issues and ensure that you get the best possible internet speeds and performance.
Additionally, you can also contact Xfinity's customer service or technical support for further assistance and guidance in selecting a compatible DOCSIS 3.1 modem.
Is it better to rent or buy a DOCSIS 3.1 modem for Xfinity service?
In general, it is usually more cost-effective to buy a DOCSIS 3.1 modem for Xfinity service rather than renting one. Renting a modem can cost up to $14 per month, which adds up to over $150 per year. On the other hand, a DOCSIS 3.1 modem can be purchased for around $100-$150, making it a worthwhile investment.
Buying your own modem also gives you more control over your internet connection. You can choose a modem that meets your specific needs and preferences, such as faster speeds or better coverage. Additionally, owning your modem means that you don't have to deal with returning a rental modem when you cancel your service.
However, it is important to ensure that the modem you purchase is compatible with Xfinity service and meets their requirements. Xfinity provides a list of approved modems on their website to help customers make informed purchasing decisions.
What are the top-rated DOCSIS 3.1 modems for Xfinity?
DOCSIS 3.1 modems are the latest technology in internet modems that offer faster and more reliable internet connections. Xfinity is one of the major cable internet service providers in the US, and they require compatible modems for their services. The top-rated DOCSIS 3.1 modems for Xfinity are:
1. Netgear CM1000 – This modem offers a maximum speed of 1 Gbps and is compatible with Xfinity's gigabit internet service.
2. Motorola MB8600 – This modem also offers a maximum speed of 1 Gbps and has 32×8 channel bonding for better performance.
3. Arris SB8200 – This modem has 32×8 channel bonding, a maximum speed of 2 Gbps, and is compatible with Xfinity's gigabit internet service.
4. Asus CM-32 – This modem is a combination of a modem and a router and offers a maximum speed of 1.3 Gbps.
5. Netgear C7800 – This modem is also a combination of a modem and a router and offers a maximum speed of 3.2 Gbps.
All of these modems are compatible with Xfinity's internet services and offer fast and reliable internet connections.
Which DOCSIS 3.1 modem is recommended for Xfinity's Gigabit internet service?
For Xfinity's Gigabit internet service, it is recommended to use a DOCSIS 3.1 modem that is certified by Comcast. The modem should be capable of delivering speeds up to 1 Gbps and should have at least 32 downstream and 8 upstream channels. One of the most popular options for Xfinity's Gigabit service is the Motorola MB8600, which is certified by Comcast and supports up to 6 Gbps download speeds. Another recommended modem is the Netgear CM1000, which is also certified by Comcast and supports up to 1 Gbps speeds. It is important to note that Xfinity's Gigabit service requires a compatible modem and router, so it's best to check with Xfinity to ensure that the modem you choose is compatible with their service. In general, it's recommended to choose a modem from a reputable brand that is certified by the service provider to ensure compatibility and optimal performance.