1. Connect the other end of the coaxial cable (connected to the cable wall outlet) to the Cable connector on the rear of your SB6121. Use your hand to tighten each connector. 2.

After spending nearly an hour troubleshooting our connection issue with cable provider, I was offered a replacement through them at a monthly lease charge of $6.99 a month. For that amount I justified the cost of this replacement and avoiding the monthly charge. Setup of the Motorola SB6121 was easy and straight forward. Mar 09, 2018 · Technically the SB6121 should be good for up to 170mbps-ish in perfect conditions. Technically. 100mbps is more realistic with "good" conditions. Once an ISP decides to stop supporting a device, they can make configuration changes that effectively neuter your modem to force you to buy a new one. 16x4 Cable Modem plus AC1600 Dual Band Wi-Fi® with DFS The Motorola Model MG7540 cable modem with built-in router supports modem speeds up to 686 Mbps. With its high speed and IPv4 and IPv6 networking support, this is a product designed and built for use today and for years to come. now, I want to install it like this: coax-->SB6121--->PC nic Here is the problem: the SB6121 ha dslreports.com system message This IP address 52.191.163.105 has been blocked for unusual usage patterns Had a SB6121, and upgraded about six months ago to a SB6190. The Comcast/Xfinity rep said the SB6121s were going out of support soon when I provided the MAC address. The odd part of this upgrade, was Comcast saying I needed to upgrade my modem because of support for DOCSIS 3.0, and to provide more channels. As part of Motorola'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.

Troubleshooting Tips. If you are having troubles connecting to the internet, first try to reset the modem by unplugging the power cord from the modem and wait 1 to 2 minutes. When the modem lights come back on restart your computer or if your modem is connected to a router unplug your router for 30 seconds and plug it back in again.

Find many great new & used options and get the best deals for Motorola Sb6121 Surfboard Modem - at the best online prices at eBay! Free shipping for many products! If you have an Arris SB6183 modem and are experiencing the following issues with your eero WiFi system, you may be experiencing a bug: Large file downloads stall or fail Connection drops while s

Motorola SURFboard SB6180 DOCSIS 3.0 Cable Modem

Motorola SURFboard SB5101 Troubleshooting . Released by Motorola in November 2004, this stand-alone cable modem allows the user to connect to the internet using ethernet or USB. It features a front panel of indicator LED lights and a standby button on the top of the device.