Cable Modems & Routers Computer Modems 160 Mbps Maximum Downstream Data Rate

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    • Black Cable Modem (Standard Coaxial Input with Ethernet Port) - Image 1 of 4
    • Black Cable Modem (Standard Coaxial Input with Ethernet Port) - Image 2 of 4
    • Black Cable Modem (Standard Coaxial Input with Ethernet Port) - Image 3 of 4
    • Black Cable Modem (Standard Coaxial Input with Ethernet Port) - Image 4 of 4

    Black Cable Modem (Standard Coaxial Input with Ethernet Port)

    Pre-Owned ยท Motorola
    $50.75
    or Best Offer
    $8.71 shipping
    • Arris Surfboard SB6121 Docsis 3.0 Cable Modem Refurbished with Power - Image 1 of 4
    • Arris Surfboard SB6121 Docsis 3.0 Cable Modem Refurbished with Power - Image 2 of 4
    • Arris Surfboard SB6121 Docsis 3.0 Cable Modem Refurbished with Power - Image 3 of 4
    • Arris Surfboard SB6121 Docsis 3.0 Cable Modem Refurbished with Power - Image 4 of 4

    Arris Surfboard SB6121 Docsis 3.0 Cable Modem Refurbished with Power

    Pre-Owned ยท ARRIS
    $11.69
    Was: $12.99was - US $12.99
    or Best Offer
    $9.39 shipping
    • Motorola Surfboard SB6121 DOCSIS 3.0 Cable Modem - Image 1 of 3
    • Motorola Surfboard SB6121 DOCSIS 3.0 Cable Modem - Image 2 of 3
    • Motorola Surfboard SB6121 DOCSIS 3.0 Cable Modem - Image 3 of 3

    Motorola Surfboard SB6121 DOCSIS 3.0 Cable Modem

    Pre-Owned ยท Motorola
    $7.00
    or Best Offer
    $6.82 shipping
    • Motorola SURFboard SB6121 (575319-019-00) 160 Mbps - Image 1 of 4
    • Motorola SURFboard SB6121 (575319-019-00) 160 Mbps - Image 2 of 4
    • Motorola SURFboard SB6121 (575319-019-00) 160 Mbps - Image 3 of 4
    • Motorola SURFboard SB6121 (575319-019-00) 160 Mbps - Image 4 of 4

    Motorola SURFboard SB6121 (575319-019-00) 160 Mbps

    Pre-Owned ยท Motorola
    (319)
    $35.00
    or Best Offer
    Free shipping
  • Motorola/Arris SURFboard eXtreme Cable Modem Model SB6121 DOCSIS 3.0 With Box - Image 1 of 4

    Motorola/Arris SURFboard eXtreme Cable Modem Model SB6121 DOCSIS 3.0 With Box

    Open Box ยท Motorola
    (252)
    $15.00
    or Best Offer
    $10.00 shipping
  • Motorola SURFboard Extreme Cable Modem SB6121 Docsis 3.0 Up To 160 Mbps - Image 1 of 4

    Motorola SURFboard Extreme Cable Modem SB6121 Docsis 3.0 Up To 160 Mbps

    Open Box ยท Motorola
    $12.97
    or Best Offer
    $10.00 shipping
  • Motorola SURFboard SB6141 eXtreme Cable Modem - Image 1 of 2

    New ListingMotorola SURFboard SB6141 eXtreme Cable Modem

    Pre-Owned ยท Motorola
    (217)
    $2.99
    $9.39 shipping
    0 bids
    6d 8h
  • Motorola Surfboard SB6121 Cable Modem with Power Adaptor - Image 1 of 1

    Motorola Surfboard SB6121 Cable Modem with Power Adaptor

    Pre-Owned ยท Motorola
    (252)
    $5.00
    Trending at $6.70

    eBay determines this price through a machine learned model of the product's sale prices within the last 90 days.

    $9.29 shipping
  • Motorola SURFboard SB6121 (575319-019-00) 199.68 Mbps - Image 1 of 4

    Motorola SURFboard SB6121 (575319-019-00) 199.68 Mbps

    Open Box ยท Motorola
    (319)
    $14.99
    or Best Offer
    Free shipping
  • Motorola Surfboard SB6121 Extreme Cable Modem Docsis 3.0 - Image 1 of 4

    Motorola Surfboard SB6121 Extreme Cable Modem Docsis 3.0

    Brand New ยท Motorola
    (252)
    $24.99
    or Best Offer
    $10.00 shipping
  • Motorola SURFboard eXtreme gaming Cable Modem DOCSIS 3.0 SB6121 no box - Image 1 of 4

    New ListingMotorola SURFboard eXtreme gaming Cable Modem DOCSIS 3.0 SB6121 no box

    Pre-Owned ยท Motorola
    (319)
    $8.00
    $11.95 shipping
    0 bids
    6d 4h
  • Motorola CABLE MODEM Surfboard SB6121 DOCSIS 3.0 Black USED - Image 1 of 4

    Motorola CABLE MODEM Surfboard SB6121 DOCSIS 3.0 Black USED

    Pre-Owned ยท Motorola
    (319)
    $23.99
    or Best Offer
    Free shipping
  • Motorola SURFboard eXtreme Cable Modem DOCSIS 3.0 (SB6121) - VG++ - Image 1 of 4

    Motorola SURFboard eXtreme Cable Modem DOCSIS 3.0 (SB6121) - VG++

    Pre-Owned ยท Motorola
    $19.95
    $8.95 shipping
  • Motorola SURFboard eXtreme SB6121 Cable Modem DOCSIS 3.0 - Image 1 of 4

    Motorola SURFboard eXtreme SB6121 Cable Modem DOCSIS 3.0

    Pre-Owned ยท Motorola
    $29.80
    or Best Offer
    $15.70 shipping
  • Motorola SURFboard SB6121 Extreme Cable Modem BRAND NEW/Open Box/FREE USA SHIP - Image 1 of 2

    Motorola SURFboard SB6121 Extreme Cable Modem BRAND NEW/Open Box/FREE USA SHIP

    Brand New ยท Motorola
    (252)
    $18.50
    $8.71 shipping
  • Motorola/Arris SURFboard eXtreme Cable Modem Model SB6121 DOCSIS 3.0 With Box - Image 1 of 4

    Motorola/Arris SURFboard eXtreme Cable Modem Model SB6121 DOCSIS 3.0 With Box

    Open Box ยท Motorola
    (252)
    $25.00
    $12.27 shipping
  • Motorola Surfboard eXtreme DOCSIS 3.0 Cable Modem *New, Open Box* SB6121 - Image 1 of 4

    Motorola Surfboard eXtreme DOCSIS 3.0 Cable Modem *New, Open Box* SB6121

    Open Box ยท Motorola
    (319)
    $89.00
    or Best Offer
    $13.35 shipping
  • Arris Surfboard SB6121 Docsis 3.0 Cable Modem with Power adapter - Image 1 of 1

    Arris Surfboard SB6121 Docsis 3.0 Cable Modem with Power adapter

    Pre-Owned ยท ARRIS
    $14.85
    Free shipping
  • Hitron CGN3 Modem - CGN3U Wireless Cable Modem Router Gateway. Sealed. Read - Image 1 of 4

    Hitron CGN3 Modem - CGN3U Wireless Cable Modem Router Gateway. Sealed. Read

    New (Other) ยท Hitron
    $32.08
    or Best Offer
    $29.40 shipping
  • Motorola SURFboard eXtreme Cable Modem DOCSIS 3.0 - Image 1 of 4

    Motorola SURFboard eXtreme Cable Modem DOCSIS 3.0

    Brand New ยท Motorola
    (319)
    $15.00
    or Best Offer
    $9.31 shipping
  • Motorola Surfboard eXtreme Cable Modem SB6121 DOCSIS 3.0~Black~New in Opened Box - Image 1 of 4

    Motorola Surfboard eXtreme Cable Modem SB6121 DOCSIS 3.0~Black~New in Opened Box

    Brand New ยท Motorola
    $25.00
    $12.30 shipping
  • Motorola Cable Modem SURFboard eXtreme DOCSIS 3.0 SB6121 Ethernet Open Box - Image 1 of 4

    Motorola Cable Modem SURFboard eXtreme DOCSIS 3.0 SB6121 Ethernet Open Box

    Open Box ยท Motorola
    (319)
    $14.99
    or Best Offer
    $9.39 shipping
  • Hitron CGN3 Cable Modem Router, CGN3U Docsis 3.0 Wireless Internet Gateway WiFi - Image 1 of 4

    Hitron CGN3 Cable Modem Router, CGN3U Docsis 3.0 Wireless Internet Gateway WiFi

    Pre-Owned ยท Hitron
    $36.34
    or Best Offer
    Free shipping
  • Motorola Surfboard extreme Cable Modem SB6121 DOCSIS 3.0 VGC excellent condition - Image 1 of 4

    Motorola Surfboard extreme Cable Modem SB6121 DOCSIS 3.0 VGC excellent condition

    Pre-Owned ยท Motorola
    (319)
    $5.00
    $8.24 shipping
    0 bids
    6d 11h
  • Motorola SURFboard eXtreme Cable Modem DOCSIS 3.0 Charter COX - Image 1 of 4

    Motorola SURFboard eXtreme Cable Modem DOCSIS 3.0 Charter COX

    Open Box ยท Motorola
    $9.90
    or Best Offer
    Trending at $11.95

    eBay determines this price through a machine learned model of the product's sale prices within the last 90 days.

    $12.75 shipping
  • Motorola SURFboard eXtreme Cable Modem SB6121 Docsis 3.0 Broadband - Image 1 of 3

    Motorola SURFboard eXtreme Cable Modem SB6121 Docsis 3.0 Broadband

    Pre-Owned ยท Motorola
    (319)
    $15.00
    or Best Offer
    Free shipping
  • Motorola SURFboard Extreme Cable Modem SB6121 Docsis 3.0 Up To 160 Mbps - Image 1 of 4

    Motorola SURFboard Extreme Cable Modem SB6121 Docsis 3.0 Up To 160 Mbps

    Pre-Owned ยท Motorola
    $9.99
    or Best Offer
    $9.39 shipping
  • Motorola SURFboard eXtreme Cable Modem, SB6121, Tested & Works - Image 1 of 4

    Motorola SURFboard eXtreme Cable Modem, SB6121, Tested & Works

    Pre-Owned ยท Motorola
    (319)
    $7.95
    or Best Offer
    $11.07 shipping
  • Motorola SURFboard eXtreme (SB6121) 160 Mbps Dpwnload Speed - Image 1 of 2

    Motorola SURFboard eXtreme (SB6121) 160 Mbps Dpwnload Speed

    Open Box ยท Motorola
    (319)
    $14.00
    or Best Offer
    $11.40 shipping
  • MOTOROLA eXtreme SURFboard SB6121 SB 6121 DOCSIS 3.0 CABLE MODEM (575319-019-00) - Image 1 of 4

    MOTOROLA eXtreme SURFboard SB6121 SB 6121 DOCSIS 3.0 CABLE MODEM (575319-019-00)

    Open Box ยท Motorola
    (319)
    $24.99
    or Best Offer
    $14.40 shipping
  • Used Working Motorola SURFboard eXtreme SB6121 DOCSIS 3.0 High-Speed Cable Modem - Image 1 of 4

    Used Working Motorola SURFboard eXtreme SB6121 DOCSIS 3.0 High-Speed Cable Modem

    Pre-Owned ยท Motorola
    (319)
    $9.95
    $16.65 shipping
  • Motorola SURFboard eXtreme (SB6121) - Image 1 of 4

    Motorola SURFboard eXtreme (SB6121)

    Pre-Owned ยท Motorola
    (319)
    $34.99
    or Best Offer
    Free shipping
  • Smart RG SR808ac 802.11ac DOCSIS 3.0 Gateway Modem/Router - Image 1 of 3

    Smart RG SR808ac 802.11ac DOCSIS 3.0 Gateway Modem/Router

    Pre-Owned
    $30.80
    or Best Offer
    $18.11 shipping
    Only 1 left!
  • Motorola SURFboard eXtreme Cable Modem SB6121 DOCSIS 3.0 Open Box - Image 1 of 1

    Motorola SURFboard eXtreme Cable Modem SB6121 DOCSIS 3.0 Open Box

    Pre-Owned ยท Motorola
    (319)
    $10.00
    or Best Offer
    $12.27 shipping
  • Hitron CGN3 Modem - CGN3U Wireless Cable Modem Router Gateway - Image 1 of 2

    Hitron CGN3 Modem - CGN3U Wireless Cable Modem Router Gateway

    Pre-Owned ยท Hitron
    $18.23
    $18.11 shipping
  • Motorola SURFboard SB6121 Extreme Cable Modem BRAND NEW/Open Box - Image 1 of 4

    Motorola SURFboard SB6121 Extreme Cable Modem BRAND NEW/Open Box

    Brand New ยท Motorola
    (252)
    $20.00
    $9.31 shipping
  • Motorola Surfboard eXtreme Cable Modem SB6121 DOCSIS 3.0 - Image 1 of 3

    Motorola Surfboard eXtreme Cable Modem SB6121 DOCSIS 3.0

    Pre-Owned ยท Motorola
    (252)
    $14.95
    Free shipping
  • Hitron CODA-4582U DOCSIS 3.1 Cable Modem WiFi Wireless Router Gateway White - Image 1 of 2

    Hitron CODA-4582U DOCSIS 3.1 Cable Modem WiFi Wireless Router Gateway White

    Pre-Owned ยท Hitron
    $33.94
    or Best Offer
    $18.11 shipping
    Only 1 left!
  • Motorola SURFboard SB6121 Cable Modem - Image 1 of 1

    Motorola SURFboard SB6121 Cable Modem

    Open Box ยท Motorola
    (319)
    $20.00
    or Best Offer
    $19.60 shipping
  • Motorola SURFboard eXtreme (SB6121) 160 Mbps - Image 1 of 4

    Motorola SURFboard eXtreme (SB6121) 160 Mbps

    Pre-Owned ยท Motorola
    (252)
    $14.95
    or Best Offer
    $9.39 shipping
  • Motorola SURFboard eXtreme Cable Modem SB6121 - Image 1 of 4

    Motorola SURFboard eXtreme Cable Modem SB6121

    Open Box ยท Motorola
    (319)
    $28.12
    Was: $37.49was - US $37.49
    or Best Offer
    $23.95 shipping
  • Motorola Surfboard Extreme Cable Modem DOCSIS 3.0 Fast Connection USA Seller - Image 1 of 4

    Motorola Surfboard Extreme Cable Modem DOCSIS 3.0 Fast Connection USA Seller

    Open Box ยท Motorola
    (319)
    $29.99
    or Best Offer
    Free shipping
  • Motorola SURFboard SB6121 DOCSIS 3.0 Cable Modem - Image 1 of 4

    Motorola SURFboard SB6121 DOCSIS 3.0 Cable Modem

    Pre-Owned ยท Motorola
    $9.95
    $5.00 shipping
  • Motorola SURFboard eXtreme Cable Modem SB6121 Docsis 3.0 - Image 1 of 3

    Motorola SURFboard eXtreme Cable Modem SB6121 Docsis 3.0

    Pre-Owned ยท Motorola
    (319)
    $9.95
    or Best Offer
    $9.95 shipping
  • Motorola SURFboard eXtreme (SB6121) Cable Modem DOCSIS 3.0 - Image 1 of 4

    Motorola SURFboard eXtreme (SB6121) Cable Modem DOCSIS 3.0

    Open Box ยท Motorola
    $18.00
    or Best Offer
    $12.75 shipping
  • Motorola SURFboard SB6121 160 Mbps - Image 1 of 3

    Motorola SURFboard SB6121 160 Mbps

    Open Box ยท Motorola
    (319)
    $9.00
    or Best Offer
    $10.82 shipping
  • Motorola Surfboard SB6120 DOCSIS 3.0 Cable Modem - Image 1 of 3

    Motorola Surfboard SB6120 DOCSIS 3.0 Cable Modem

    Pre-Owned ยท Motorola
    (319)
    $8.69
    or Best Offer
    $18.11 shipping
  • Motorola SURFboard SB6121 (575319-019-00) 160 Mbps - Image 1 of 4

    Motorola SURFboard SB6121 (575319-019-00) 160 Mbps

    Pre-Owned ยท Motorola
    (319)
    $14.99
    or Best Offer
    $10.12 shipping
  • Motorola/Arris SURFboard eXtreme Cable Modem Model SB6121 DOCSIS 3.0 With Box - Image 1 of 1

    Motorola/Arris SURFboard eXtreme Cable Modem Model SB6121 DOCSIS 3.0 With Box

    Open Box ยท Motorola
    (252)
    $20.00
    or Best Offer
    $12.27 shipping
  • Hitron CODA-4582U Cable Modem WiFi Wireless Router White *READ* - Image 1 of 4

    Hitron CODA-4582U Cable Modem WiFi Wireless Router White *READ*

    Pre-Owned ยท Hitron
    $28.34
    or Best Offer
    $26.28 shipping
  • Motorola/Arris SURFboard eXtreme Cable Modem Model SB6121 DOCSIS 3.0 With Box - Image 1 of 4

    Motorola/Arris SURFboard eXtreme Cable Modem Model SB6121 DOCSIS 3.0 With Box

    Pre-Owned ยท Motorola
    (252)
    $16.44
    or Best Offer
    $1.95 shipping
  • Smart/RG SR804n 802.11n DOCSIS 3.0 Cable Modem - Image 1 of 3

    Smart/RG SR804n 802.11n DOCSIS 3.0 Cable Modem

    Pre-Owned
    $19.66
    or Best Offer
    $18.11 shipping
  • Smart/RG SR808ac 802.11ac DOCSIS 3.0 Cable Modem Gateway - Image 1 of 4

    Smart/RG SR808ac 802.11ac DOCSIS 3.0 Cable Modem Gateway

    New (Other)
    $80.02
    or Best Offer
    $18.09 shipping
  • Motorola SURFboard eXtreme Cable Modem SB6121 DOCSIS 3.0 - Image 1 of 2

    Motorola SURFboard eXtreme Cable Modem SB6121 DOCSIS 3.0

    Pre-Owned ยท Motorola
    $15.00
    $6.25 shipping
  • Motorola SURFboard eXtreme (SB6121) Cable Modem DOCSIS 3.0 - Image 1 of 4

    Motorola SURFboard eXtreme (SB6121) Cable Modem DOCSIS 3.0

    Pre-Owned ยท Motorola
    $24.95
    $8.25 shipping
  • Motorola External SURFboard SB6121 (575319-019-00) DOCSIS 3.0 Cable Modem - Image 1 of 4

    Motorola External SURFboard SB6121 (575319-019-00) DOCSIS 3.0 Cable Modem

    Open Box ยท Motorola
    (319)
    $35.00
    or Best Offer
    Free shipping
  • Motorola SURFboard eXtreme gaming Cable Modem DOCSIS 3.0 SB6121 199.68 Mbps - Image 1 of 4

    Motorola SURFboard eXtreme gaming Cable Modem DOCSIS 3.0 SB6121 199.68 Mbps

    Pre-Owned ยท Motorola
    $25.95
    or Best Offer
    $7.10 shipping
  • Motorola Surfboard SB6121 DOCSIS 3.0 Cable Modem - Image 1 of 4

    Motorola Surfboard SB6121 DOCSIS 3.0 Cable Modem

    Pre-Owned ยท Motorola
    $21.99
    or Best Offer
    Free shipping
  • Motorola SURFboard eXtreme Cable Modem DOCSIS 3.0 SB6121 Wireless Black Internet - Image 1 of 4

    Motorola SURFboard eXtreme Cable Modem DOCSIS 3.0 SB6121 Wireless Black Internet

    Pre-Owned ยท Motorola
    $22.48
    or Best Offer
    $8.23 shipping
  • Motorola SURFboard eXtreme Cable Modem SB6121 DOCSIS 3.0 Fast Shipping ๐Ÿ’จ - Image 1 of 3

    Motorola SURFboard eXtreme Cable Modem SB6121 DOCSIS 3.0 Fast Shipping ๐Ÿ’จ

    Pre-Owned ยท Motorola
    (319)
    $24.08
    Was: $32.99was - US $32.99
    $12.10 shipping

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