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Sb6121 in Computers For Sale

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$39.00   2 days ago
Motorola SURFboard SB6121 DOCSIS 3.0 Cable Modem Works Properly - $39 (NORTH EAST)

Motorola SURFboard SB6121 DOCSIS 3.0 Cable Modem, WORKING WITH POWER SUPPLY AND ETHERNET CABLE, COMPATIBLE WITH COX, COMCAST/INFINITY, BRIGHT HOUSE, .Most importantly, it helped remove that silly $19 cable modem rental fee charged by my cable company. If you still rent your modem, I highly recommend purchasing this one as it will pay for itself in just a couple months. Compatible with MOST Major C

$20.00   1 week ago
Motorola Arris Cable Modem SB6121 - $20 (Summit)

DOCSIS 3.0 modem was in use on Comcast. Excellent condition. With power adapter. In box.

$30.00   1 week ago
NEW Motorola / Arris SURFboard Cable Modem 200 Series, Model SB6121 - $30 (Reno)

NEW Motorola / Arris SURFboard Cable Modem 200 Series, Model SB6121This new. Wired modem only, does NOT include WIFI Router or VOIP Telephone adapter. Gigabit Ethernet port to connect to computer or Router for fast downloads.Compatible with Comcast, Time Warner, Cox, Charter, Bright House Networks and MOST Small Regional Cable Providers (NOT compatible with Verizon FiOS or AT&T U-verse). Requi

$40.00   2 weeks ago
ARRIS SURFboard SB6121 DOCSIS 3.0 Cable Modem - $40 (DAYTON)

Do you have cable internet? Are you a Time Warner/Spectrum customer who is paying them $6.99 a month to rent a cable modem? PAY NO MORE!! This cable modem is guaranteed to work with Time Warner/Spectrum and you'll no longer have to rent it from them! $7 a month for a whole year is $84!! You can buy this for half the price and it will pay for itself in 6 months!https://www.amazon.com/SURFboard-SB61

$22.00   3 weeks ago
Motorola Arris SB6121 SURFboard DOCSIS 3.0 High-Speed Cable Modem - $22 (wilmot / i10)

Motorola Arris SB6121 SURFboard DOCSIS 3.0 High-Speed Cable Modem in boxCALL OR TEXT AT

$50.00   3 weeks ago
ARRIS SURFboard SB6121 DOCSIS 3.0 Cable Modem for sale - $50 (Los Angeles)

I have an:ARRIS SURFboard SB6121 DOCSIS 3.0 Cable Modem for sale.Wired modem only, does NOT include WIFI Router or VOIP Telephone adapter. Compatible with Time Warner / Spectrum internet provider.Requires CABLE Internet Service, if not sure, call your internet service provider to confirm.Internet speeds based on your Cable providers service - up to 172 Mbps download and 131 Mbps upload. 4 Download

$40.00   1 month ago
ARRIS SURFboard SB6121 DOCSIS 3.0 Cable Modem Include Original Box/Pac - $40 (Princeton, IL)

Stop paying monthly rental fee for Comcast/Xfinity modem, buy your own ! ARRIS SURFboard SB6121 DOCSIS 3.0 Cable Modem Include Original Box/Packaging Works perfectly! all original items are included with it. I used it with Comcast/Xfinity but it is compatible with any ISP that uses DOCSIS 3.0 The protective film is still on the display.INCLUDED ITEMS Modem and AC/DC adapter original box, Asking $4

$40.00   1 month ago
ARRIS SURFboard SB6121 DOCSIS 3.0 Cable Modem Include Original Box/Pac - $40 (Princeton, IL)

ARRIS SURFboard SB6121 DOCSIS 3.0 Cable Modem Include Original Box/Packaging Works perfectly! all original items are included with it. I used it with Comcast/Xfinity but it is compatible with any ISP that uses DOCSIS 3.0 The protective film is still on the display.INCLUDED ITEMS Modem and AC/DC adapter original box, Asking $40 cash Text or call with questions at

$40.00   1 month ago
ARRIS SURFboard SB6121 DOCSIS 3.0 Cable Modem Include Original Box/Pac - $40 (Princeton, IL)

ARRIS SURFboard SB6121 DOCSIS 3.0 Cable Modem Include Original Box/Packaging Works perfectly! all original items are included with it. I used it with Comcast/Xfinity but it is compatible with any ISP that uses DOCSIS 3.0 The protective film is still on the display.INCLUDED ITEMS Modem and AC/DC adapter original box, Asking $40 cash Text or call with questions at

$25.00   2 months ago
Arris Motorola SURFboard Modem SB6121 DOCSIS 3.0 - $25 (Niceville)

Used, but still have original box and paperwork.This modem only supports internet speeds upto 172mb. Before purchasing, be sure to check with your cable provider on the compatibility of this modem.

$60.00   2 months ago
ARRIS SURFboard SB6121 DOCSIS 3.0 Cable Modem - $60 (University Village)

Used only a few months before I switched to Gigapower ATT. Includes box, instructions and AC adapter. Compatible with Comcast, Time Warner, Cox, Charter, Bright House Networks and MOST Small Regional Cable Providers (NOT compatible with Verizon FiOS or AT&T U-verse). Internet speeds based on your Cable providers service - up to 172 Mbps download and 131 Mbps upload. 4 Download and 4 Upload Cha

$28.00   2 months ago
Motorola Arris SB6121 SURFboard DOCSIS 3.0 High-Speed Cable Modem - $28 (wilmot / i10)

Motorola Arris SB6121 SURFboard DOCSIS 3.0 High-Speed Cable Modem in boxCALL OR TEXT AT

$25.00   2 months ago
Cable Modem - Arris SURFboard SB6121 - $25

Selling cable modem used for service with Time Warner so I wouldn't have to pay modem rental fees. Bought new in Aug 2015, Works great and is DOCSIS 3.0 compliant. My router needed replacing so I upgraded to a dual wifi modem. This modem does NOT have a wifi router built in. You will need a separate router.

$35.00   3 months ago
Arris Motorola SURFboard DOCSIS 3.0 Cable Modem Arris SB6121 - $35 (milton)

You are viewing a Motorola Arris SB6121 SURFboard DOCSIS 3.0 Cable Modem 200 Series.Stop renting, own your modemDOCSIS 3.0 Cable Modem4 download and 4 upload channelsCompatible with major U.S. Broadband Cable Providers

$15.00   3 months ago
Motorola SURFboard Modem (#SB6121) - $15 (Fargo, ND)

Selling a Motorola SURFboard DOCSIS 3.0 Modem (#SB6121). Was purchased new from best buy about a year ago. Haven't had any issues with it or experienced any downtime. Reason for selling is that this modem is not approved with Midcontinent and was required to upgrade. Original box and manuals are included as well as modem and power cable. asking $15 cashif interested, have any general questions, or

$25.00   3 months ago
Motorola Surfboard SB6121 modem - $25 (Camillus, NY)

This is a DOCSIS 3.0 modem. Worked perfectly for myself for 2 years.

$40.00   4 months ago
Arris Surfboard Modem SB6121 - $40 (Ojai)

Wired modem only, does NOT include WIFI Router or VOIP Telephone adapter. Gigabit Ethernet port to connect to computer or Router for fast downloads.Compatible with Comcast, Time Warner, Cox, Charter, Bright House Networks and MOST Small Regional Cable Providers (NOT compatible with Verizon FiOS or AT&T U-verse). Requires CABLE Internet Service, if not sure your provider is CABLE call them to c

$25.00   4 months ago
Arris Motorola SURFboard Modem SB6121 DOCSIS 3.0 - $25 (Niceville)

Used, but still have original box and paperwork. Upgraded to a newer modem. Works great, though.

$15.00   4 months ago
SB6121 Cable Modem Xfinity Comcast - $15 (Morgantown / Fairmont)

Like new cable modem for xfinity comcast service

$40.00   4 months ago
Arris Surfboard Modem SB6121 - $40 (Ojai)

Wired modem only, does NOT include WIFI Router or VOIP Telephone adapter. Gigabit Ethernet port to connect to computer or Router for fast downloads.Compatible with Comcast, Time Warner, Cox, Charter, Bright House Networks and MOST Small Regional Cable Providers (NOT compatible with Verizon FiOS or AT&T U-verse). Requires CABLE Internet Service, if not sure your provider is CABLE call them to confi


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Last Updated on: March 27, 2017
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