Please Note: These modems are factory refurbished, so at one point your modem may have been operating in someone’s house before it was re-worked. In some rare cases our friends at the cable company may not have removed the MAC id address from their system. So why does that matter? Well, in some very isolated situations, we have seen the cable company deny activation on a refurbished modem. It has only happened a few times, but if you happen to be one of the “lucky ones”, relax, and know that you can email us immediately and we will make it right for you no matter what.

Building upon the success of the SB6120, Arris SURFboard SB6121 delivers your complete personal media experience, at lightning-fast broadband speed. It harnesses the power of DOCSIS 3.0 technology to bond up to four downstream channels and four upstream channels--providing you advanced multimedia services with data rates of more than 100 Mbps in each direction. That makes gaming, shopping, downloading, working, high-quality voice and video conferencing, and peer-to-peer networking applications far more realistic, faster, and efficient than ever before.

Key Features:

Easy to Set Up and Use

• Plug and play installation
• Front panel LEDs indicate status and simplify troubleshooting
• Multi-language user guides
• Supports standard internet software
• User-friendly online diagnostics

Efficient

• Stylish and space-saving enclosure
• Offers innovative, high-bandwidth data and multimedia services to customers
• Backward-compatible to DOCSIS/EuroDOCSIS 1.x and 2.0

Advanced Services Ready

• DOCSIS 3.0-certified (EuroDOCSIS 3.0-based)
• Channel bonding of up to 4 downstream and 4 upstream channels
• 1 GHz capable tuners
• Supports IPv4 and IPv6 to expand network addressing capabilities

Versatile and Convenient

• Compatible with Windows, Macintosh, and UNIX computers.
• Gigabit Ethernet (RJ-45) data port enable flexible, high-speed connectivity with Auto Negotiate and Auto MDIX

Reliable and Secure

• Enhanced security: supports Advanced Encryption Services (AES) traffic encryption
• Remotely configurable and monitorable using SNMP and TFTP

As part of Arris's DOCSIS 3.0 Ultra-Broadband family of products, the SB6121 includes an enhanced tuner that supports up to a 1 GHz downstream input, which allows operators to increase the frequency spectrum for deployment of new high-value services--such as bandwidth on-demand, commercial services, interactive gaming, and IPTV. The SB6121 features a 10/100/1000Base-T Ethernet (RJ-45) port, as well as intuitive, easy-to-read front-panel operational status LEDs.

What Is DOCSIS 3.0?
With the DOCSIS 3.0 specification, cable Internet providers can take advantage of the extra capacity provided by channel-bonding technology in order to offer ultra-fast broadband services. Channel bonding allows parallel data pipes to act as a single broadband conduit. With each channel capable of providing around 40 Mbps of data, the Motorola SURFboard SB6121's four downstream channels can provide a theoretical maximum of 160 Mbps of throughput.

Currently, cable providers max out at around 50 Mbps of downstream data throughput, but DOCSIS 3.0 will enable cable Internet providers to continue to improve the speed of their networks.

NOTE:

• Requires CABLE Internet Service. If you are not sure your provider is CABLE, call them to confirm before you purchase this product
• Compatible with ALL Major CABLE providers like Comcast/Xfinity, Cox, Charter, Time Warner, Mediacom, Bright House

Shipping Note: Shipping to Alaska and Hawaii is not available for this item.

A physical address is required for delivery. No Military or PO Box shipments available

Warranty: 90 Day Arris