The Best Sb6121 Modem of 2021 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best Sb6121 Modem of 2021. Check our ranking below.

2,586 Reviews Scanned

Rank No. #1
ARRIS SURFboard SB6190 DOCSIS 3.0 Cable Modem, Approved for Cox, Spectrum, Xfinity & others (Black)
  • Compatible with major U.S. Cable Internet Providers including Cox, Spectrum, Xfinity & others. Not compatible with ATT, Verizon, CenturyLink or other DSL or Fiber internet providers.
  • DOCSIS 3.0 Cable Modem best for cable internet speed plans up to 600 Mbps
  • 32 downstream x 8 upstream DOCSIS 3.0 bonded channels
  • 1 Gigabit Ethernet port for connecting to a Wi-Fi router or other device.
  • Cable internet service required. Does not inlcude Wi-Fi and does not support cable digital voice service.
Rank No. #2
Arris/Motorola SB6121 DOCSIS 3.0 Cable Modem in Non-Retail Packaging (Brown Box)
  • DOCSIS 3.0 certified, capable of up to 172 Mbps and upload speeds up to 131 Mbps based on Cable Internet Service Provider
  • Supports IPv4 and IPv6 networking, as well as Windows, Mac, and Linux computers
  • 10/100/1000Mbps Ethernet port to connect with router or computer
  • Requires Cable Internet Service. Compatible with major U.S. Cable Providers. Contact your ISP to confirm compatibility. Front-panel LEDs indicate status and simplify troubleshooting
  • Tips* Reorient or relocate the receiving antenna. Increase the separation between the device and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. . Consult the dealer or an experienced radio/TV technician for help.
SaleRank No. #3
ARRIS SURFboard SB6121 4x4 DOCSIS 3.0 Cable Modem -Retail Packaging-Black
  • Compatible with Time Warner Cable, Charter, Cox, Cablevision, and more
  • Not compatible with Verizon FiOS or AT&T U-verse, no longer approved by Comcast Xfinity
  • Requires Cable Iternet Service, if not sure your provider is CABLE call them to confirm
  • BROWN BOX models NOT VALID for this item when sold as New, should report to Amazon immediately and RETURN to Seller
  • Wired modem only, does NOT include WIFI Router or VOIP Telephone adapter. Gigabit Ethernet port to connect to computer or Router for fast downloads.
SaleRank No. #4
ARRIS SURFboard SBG10 DOCSIS 3.0 Cable Modem & AC1600 Dual Band Wi-Fi Router, Approved for Cox, Spectrum, Xfinity & others (black)
  • 3 products in 1: DOCSIS 3 0 Cable Modem, AC1600 dual-band Wi-Fi Router, 2 Port Gigabit Ethernet Router (cable digital voice service not supported)
  • Wi-Fi 5 AC1600 dual-band concurrent Wi-Fi Router with 2 Gigabit Ethernet ports
  • Setup and manage your network with the SURFboard Manager app
  • Compatible with major U S Cable Internet Providers including Cox, Spectrum, Xfinity & others. Cable internet service required. Not compatible with ATT, Verizon, CenturyLink or other DSL or Fiber internet providers
  • 16 downstream & 4 upstream channels. Best for cable internet service plans up to 400 Mbps.
Rank No. #5
motorola Surfboard SB6121 Cable Modem (Renewed)
  • This refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, and may arrive in a generic box
Rank No. #6
Replacement 12V AC/DC Adapter Charger for Comcast Xfinity Motorola Surfboard SBG6700AC SBG6580 SB6120 SB6121 SB6141 SB6180 SBG6580, SB6183 SBG6782 SBG6782-AC SBG901 900 Cable Modem DTA-100 Power Cord
  • You Will Get HIGH QUALITY 1 x 12V 2A 24W power supply with 6.6ft power cord, 1 x 5.5/2.1 DC female barrel connector to screw adapter.To meet more requirements, we provide a female DC connector. You can easily screw the wire onto it without soldering. This will greatly expand its scope of application.
  • This 12V2A power adapter, suitable for Motorola ARRIS SURFboard SB6190 SB6183 Sb5100 ,Comcast Xfinity Motorola Surfboard ARRIS SURFboard SBG6700AC SBG6700-AC SBG6580 SBG6580-G228 (570763-006-00) Comcast Xfinity 570406-002-00 DCX3200,A285,011 COMCAST MR150CNM , ARRIS F,G NO:588173-003-00 DCX3200 C385,011 MR150CNM DOCSIS ,, SBG6580 SBG6580-G228 (570763-006-00) ,, SB6120 SB6121 SB6141 SB6180 SBG901 900 Cable Modem dta-100 , DCT-700 PN# 503913-007 Model: MT-20-21120-A04F.
  • AC Adapter Input Voltage: 100-240V input 50/60HZ,; Output Voltage: 12V DC 2000 mA, 24 Watt max wattage. Adapt to 2.1mm * 5.5mm and 2.5mm * 5.5mm center positive electrode equipment. It is a perfect replacement for all 12V 0-2Amp power supplies.(Note: The applicable range is 12 volts and does not exceed 24 watts)
  • Safety Guarantee; This adapters was made with the highest quality materials.OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection)
  • More energy-saving and power-saving, saving 5%-20% of electricity bill than ordinary equipment. 24hours response, 30 days money back guarantee, If you don’t like our product or don't want it, please feel free to contact us
Rank No. #7
T-Power 12v AC DC Adapter Compatible with Comcast Xfinity Motorola Surfboard SBG6700AC SBG6580 SB6120 SB6121 SB6141 SB6180 Sbg6580, SB6183 SBG6782 SBG6782-AC SBG901 900 Cable Modem dta-100
  • T-Power - manufactured with Brand-new Input Voltage Range: AC 100V - 240V (12V )
  • Compatible Models: Motorola ARRIS SURFboard SB6190 SB6183 Sb5100 ,Comcast Xfinity Motorola Surfboard ARRIS SURFboard SBG6700AC SBG6700-AC SBG6580 SBG6580-G228 (570763-006-00) Comcast Xfinity 570406-002-00 DCX3200,A285,011 COMCAST MR150CNM , ARRIS F,G NO:588173-003-00 DCX3200 C385,011 MR150CNM DOCSIS ,, SBG6580 SBG6580-G228 (570763-006-00) ,, SB6120 SB6121 SB6141 SB6180 SBG901 900 Cable Modem dta-100 , DCT-700 PN# 503913-007 Model: MT-20-21120-A04F
  • Belkin Wireless Router N150 N300 N450 N600 N750; Netgear N150 N600 N300; ,, MOTOROLA 579765-003 2247-N8 ADSL 2,2+ Wireless-N Modem Gateway - Black ,, Sb5100, Sb5120, Sb5101, Sb5101u, Sb5101u, Sbg901, Sb6120, Sb6121, Sb6141, Sb6180, Sbg6580, SB6183 SBG6782 SBG6782-AC , Sbg901, 900 Cable Modem Dta-100, Dct-700, 503913-007, Mt-20-21120-a04f , Netgear N150 N600 N300 , U.s. Robotics Usr3453c Usr5686g ; SB5101U 567005-005-00 SURFboard Cable Modem USB and Ethernet ;
  • Motorola SB6120 Cable Modem SURFboard eXtreme SBG6580 SURFboard Wireless Cable Modem Gateway Ethernet SBG901 556315-005-00 SURFboard Gateway DOCSIS 2.0 Wireless Cable Modem , NETGEAR DGN2000-100NAS DGND3300-100NAS DGND3700 MBR624GU 3G Mobile Broadband Wireless Router N150 DGN1000-100NAS Wireless ADSL2 plus Modem Router N600 WNDR3400 WNDR3700-100NAS Dual B
Rank No. #8
motorola Surfboard SB6121 Cable Modem
  • This refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, and may arrive in a generic box
Rank No. #9
Motorola / Arris SURFboard Cable Modem 200 Series, Model SB6121
  • Requires CABLE Internet Service, if not sure your provider is CABLE call them to confirm
  • 10/100/1000Mbps Ethernet port to connect with router or computer
  • Supports IPv4 and IPv6 networking, as well as Windows, Mac, and Linux computers
  • Good for streaming Video and gaming on multiple devices at a time
  • DOCSIS 3.0 certified, capable of up to 172 Mbps and upload speeds up to 131 Mbps based on Cable Internet Service Provider
Rank No. #10
UPBRIGHT 12V AC DC Adapter Compatible with Arris Surfboard SB8200 SB00DAD38200 DOCSIS 3.1 D3.1 SB6190 SB00DXD6190 SBG10 SBG6580 SB6183 592431-003 SBV2402 SB6141 SB6121 SB6120 D3.0 Cable Modem Router
  • World Wide Input Voltage 100-240VAC 50/60Hz. OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection). Tested Units. In Great Working Condition. UpBright 30 days money back guarantee. 1 full year service warranty.
  • UpBright AC DC Adapter Compatible with ARRIS SURFboard SB8200 SB00DAD38200 DOCSIS 3.1 D3.1 SB6190 SB00DXD6190 SBG10 SBG6580 SB6183 592431-003 SBV2402 SB6141 SB6121 SB6120 D3.0 Cable Modem Router Power Supply Cord Cable Battery Charger Mains PSU
  • Compatible with : ARRIS SURFboard SB8200 P/N: SB00DAD38200 ; ARRIS TouchStone CM8200A P/N: TC00DAD38200A2CX0; ARRIS Surfboard SB6190 SB00DXD6190; Arris SURFboard SBG10 SBG6580 SBV3202 P/N: TM02DLD3202RT SBV2402 SBV02DLD2402 SBG8300 SBG00DA78300 SBG6400 595384-001 SBG6580 SBG6580-2 SB6141 SB6121 SB6120; ARRIS 600 Series SB6183 592431-003 DOCSIS 3.0 D3.0 Cable Modem And Wi-Fi Router
  • (Compatible with item: B07DY16W2Z , B07M8BNVSD )

Last update on 2021-02-06 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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