Motorola Inc, 101 Tournament Drive, Horsham, PA 19044, 1-215-323-1000, declares that the SB6120 SURFboard® DOCSIS® 3.0 Cable Modem complies with 47 CFR Parts 2 and 15 of the FCC rules as a Class B digital device..

Motorola SurfBoard SB6121 is a popular option on the lower end of the price range. It's in the top 3 bestselling modems and has dozens of popular alternatives in the same price range, such as Motorola Surfboard SB6141 or Asus DSL-N10. Motorola SurfBoard SB6121 is $34.84 cheaper than the average modem ($84.79). Motorola Sb6121 Surfboard Modem - Be the first to write a review About this product. Pre-owned: lowest price. $29.99 Free local pickup. Add to cart. About this product. I have internet service via Comcast. I had the same modem for 5 years (Motorola SB5101). I was getting downloads of 19 Mbps and uploads of 3.1 Mbps. After installing the new modem (SB6121), I am getting downloads of 30 Mbps (a 50% improvement) and uploads of 3.7 (not as much, but still an improvement). I highly recommed this product. P.S. Motorola SB6121 is on approved modem list, but only for standalone modem use. Only our IP-Gateways are capable of carrying static IP, but it can be set to "pass-through mode". By setting the IP-Gateway to pass-through mode, all router and firewall function will be disabled. 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. New Ac Adapter for Motorola Surfboard SB6120 SB6121 SB6141 SB6180 SBG6580 SBG901 900 Cable Modem dta-100 DCT-700 Model: GDPS-C112D-1.5A Charger Cord Plug for DSL

The Motorola Surfboard SB6183 cable modem, while being a tad higher than I wanted to pay, still pays for itself in the end. It not only will save you those pesky modem lease fees the cable companies charge, but this purchase will also future proof your broadband connectivity in that one shouldn't need to upgrade their cable modem for a year or two.

I have internet service via Comcast. I had the same modem for 5 years (Motorola SB5101). I was getting downloads of 19 Mbps and uploads of 3.1 Mbps. After installing the new modem (SB6121), I am getting downloads of 30 Mbps (a 50% improvement) and uploads of 3.7 (not as much, but still an improvement). I highly recommed this product. P.S.

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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.