![Surfboard SB6121 Motorola Arris SB6121 Cable Modem](https://i.ebayimg.com/thumbs/images/g/6zQAAOSwMnBlEMg0/s-l140.jpg) | Surfboard SB6121 Motorola Arris SB6121 Cable Modem USD 10.0 Category : Modems Seller : salazarjp21_3(333, 100.0%) | ![Arris Motorola SURFboard 200 series- SB6121 DOCSIS 3.0 CABLE MODEM](https://i.ebayimg.com/thumbs/images/g/rJAAAOSwa8RmEuUr/s-l140.jpg) | Arris Motorola SURFboard 200 series- SB6121 DOCSIS 3.0 CABLE MODEM USD 14.99 Category : Modems Seller : reserveresale(176, 99.4%) |
![Motorola Surfboard SB6121 Cable Modem High Speed Internet - Black](https://i.ebayimg.com/thumbs/images/g/ycYAAOSwCe5mb6RP/s-l140.jpg) | Motorola Surfboard SB6121 Cable Modem High Speed Internet - Black USD 9.99 Category : Modems Seller : alinarox(3307, 99.9%) | ![Motorola Arris SURFboard Modem- Model SB6121- DOCSIS 3.0-Download 4X Faster](https://i.ebayimg.com/thumbs/images/g/Z8QAAOSwIGVmg6A-/s-l140.jpg) | Motorola Arris SURFboard Modem- Model SB6121- DOCSIS 3.0-Download 4X Faster USD 23.99 Category : Modems Seller : collinh23(287, 100.0%) |
![Motorola SURFboard eXtreme Cable Modem SB6121 DOCSIS 3.0](https://i.ebayimg.com/thumbs/images/g/e9AAAOSweMVmh10q/s-l140.jpg) | Motorola SURFboard eXtreme Cable Modem SB6121 DOCSIS 3.0 USD 9.99 Category : Modems Seller : treasuretrovegaming(0, 100.0%) | ![ARRIS Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem](https://i.ebayimg.com/thumbs/images/g/qxsAAOSwzHRmW20j/s-l140.jpg) | ARRIS Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem USD 18.99 Category : Modems Seller : renewedretail(1928, 100.0%) |
![Arris SURFboard SB6121 DOCSIS 3.0 Cable Modem](https://i.ebayimg.com/thumbs/images/g/32QAAOSwvehmYp2x/s-l140.jpg) | Arris SURFboard SB6121 DOCSIS 3.0 Cable Modem USD 20.0 Category : Modems Seller : mancavenw(88, 100.0%) | ![Arris Surfboard SB6121 Cable Modem High Speed Internet Pre-owned. Black](https://i.ebayimg.com/thumbs/images/g/SoAAAOSwd~9ma0~O/s-l140.jpg) | Arris Surfboard SB6121 Cable Modem High Speed Internet Pre-owned. Black USD 13.0 Category : Modems Seller : busshunter(413, 100.0%) |
![Arris Surfboard SB6121 cable modem (used)](https://i.ebayimg.com/thumbs/images/g/gGIAAOSw2Rtl0tZx/s-l140.jpg) | Arris Surfboard SB6121 cable modem (used) USD 5.0 Category : Modems Seller : erikvcl(139, 100.0%) | ![Motorola SURFboard eXtreme (SB6121) Cable Modem DOCSIS 3.0](https://i.ebayimg.com/thumbs/images/g/tgEAAOSwxWFjS11i/s-l140.jpg) | Motorola SURFboard eXtreme (SB6121) Cable Modem DOCSIS 3.0 USD 8.88 Category : Modems Seller : misc4themindless(642, 100.0%) |
![Motorola SURFboard SB6121 (575319-019-00) 199.68 Mbps](https://i.ebayimg.com/thumbs/images/g/0r8AAOSwDKJlbiGP/s-l140.jpg) | Motorola SURFboard SB6121 (575319-019-00) 199.68 Mbps USD 10.0 Category : Modems Seller : iwantto-60(85, 97.4%) | ![Motorola SURFboard SB6121 199.68Mbps Modem Router W/ Adapter & Ethernet Cords](https://i.ebayimg.com/thumbs/images/g/VmcAAOSwrB1mCbmw/s-l140.jpg) | Motorola SURFboard SB6121 199.68Mbps Modem Router W/ Adapter & Ethernet Cords USD 10.42 Category : Modems Seller : chibbfan(56, 100.0%) |
![Surfboard SB6121 Cable Modem + Linksys E2500 w/Adapters and Ethernet Cable](https://i.ebayimg.com/thumbs/images/g/ovsAAOSwnBllMWAQ/s-l140.jpg) | Surfboard SB6121 Cable Modem + Linksys E2500 w/Adapters and Ethernet Cable USD 14.99 Category : Modems Seller : starforce11(1621, 99.5%) | ![Motorola Arris SURFboard Modem- Model SB6121- DOCSIS 3.0- Unused](https://i.ebayimg.com/thumbs/images/g/8PYAAOSwwvFmgCgP/s-l140.jpg) | Motorola Arris SURFboard Modem- Model SB6121- DOCSIS 3.0- Unused USD 31.0 Category : Modems Seller : themadgamer(237, 100.0%) |
![Arris Surfboard SB6121 4x4 DOCSIS 3.0 Cable Modem](https://i.ebayimg.com/thumbs/images/g/7GEAAOSwBGRjFPa~/s-l140.jpg) | Arris Surfboard SB6121 4x4 DOCSIS 3.0 Cable Modem USD 7.0 Category : Modems Seller : cjfre_99(236, 100.0%) | ![ARRIS Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem](https://i.ebayimg.com/thumbs/images/g/nCMAAOSwjQVlobtV/s-l140.jpg) | ARRIS Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem USD 6.99 Category : Modems Seller : lyelle99(118, 99.2%) |
![ARRIS SURFboard SB6121 Cable Modem Used in good condition and working order](https://i.ebayimg.com/thumbs/images/g/~zsAAOSw8KJly3fR/s-l140.jpg) | ARRIS SURFboard SB6121 Cable Modem Used in good condition and working order USD 17.99 Category : Modem-Router Combos Seller : supplementedge(53541, 99.2%) | ![Arris Surfboard SB6121 Cable Modem Black TF](https://i.ebayimg.com/thumbs/images/g/cYgAAOSwroBkd7Ow/s-l140.jpg) | Arris Surfboard SB6121 Cable Modem Black TF USD 24.19 Category : Modems Seller : aztoyhunter(15311, 100.0%) |
![Motorola SURFboard SB6121 (575186-017-00) Cable Modem With AC CordA](https://i.ebayimg.com/thumbs/images/g/YzoAAOSwwvFmgIME/s-l140.jpg) | Motorola SURFboard SB6121 (575186-017-00) Cable Modem With AC CordA USD 4.99 Category : Modems Seller : marubioo_0(11, 100.0%) | ![Motorola Arris Surfboard Modem, Model SB6121 w/ Linksys E1000 Wireless-N Router](https://i.ebayimg.com/thumbs/images/g/V0kAAOSwWUZk6PVU/s-l140.jpg) | Motorola Arris Surfboard Modem, Model SB6121 w/ Linksys E1000 Wireless-N Router USD 3.99 Category : Modems Seller : mattheblond-0(88, 100.0%) |