20 Best Sb6121 Comcast [2024]

Are you looking for the best sb6121 comcast? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling sb6121 comcast.

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1 12V AC Adapter Power Supply for Motorola Surfboard SB6141 SB6121 SB6120 SBG6580 SBG6580-2... 12V AC Adapter Power Supply for Motorola Surfboard SB6141 SB6121 SB6120 SBG6580 SBG6580-2...
2 Replacement 12V Modem Power Cord AC DC Adapter Charger for Comcast Xfinity Motorola Surfboard... Replacement 12V Modem Power Cord AC DC Adapter Charger for Comcast Xfinity Motorola Surfboard...
3 T-Power 12v AC DC Adapter Compatible with Comcast Xfinity Motorola Surfboard SBG6700AC SBG6580... T-Power 12v AC DC Adapter Compatible with Comcast Xfinity Motorola Surfboard SBG6700AC SBG6580...
4 ARRIS SURFboard SB6121 4x4 DOCSIS 3.0 Cable Modem (Renewed)-Black ARRIS SURFboard SB6121 4x4 DOCSIS 3.0 Cable Modem (Renewed)-Black
5 ARRIS SURFboard SB6121 4x4 DOCSIS 3.0 Cable Modem -Retail Packaging-Black ARRIS SURFboard SB6121 4x4 DOCSIS 3.0 Cable Modem -Retail Packaging-Black
6 Motorola MB7621 Cable Modem | Pairs with Any WiFi Router | Approved by Comcast Xfinity, Cox, and... Motorola MB7621 Cable Modem | Pairs with Any WiFi Router | Approved by Comcast Xfinity, Cox, and...
7 motorola Surfboard SB6121 Cable Modem motorola Surfboard SB6121 Cable Modem
8 ARRIS Surfboard S33 DOCSIS 3.1 Multi-Gigabit Cable Modem | Approved for Comcast Xfinity, Cox,... ARRIS Surfboard S33 DOCSIS 3.1 Multi-Gigabit Cable Modem | Approved for Comcast Xfinity, Cox,...
9 Replacement Power Supply for Comcast Xfinity Motorola Surfboard, Adapter for Belkin Netgear Linksys... Replacement Power Supply for Comcast Xfinity Motorola Surfboard, Adapter for Belkin Netgear...
10 ARRIS SURFboard SB6190 DOCSIS 3.0 32 x 8 Gigabit Cable Modem | Comcast Xfinity, Cox, Spectrum | 1... ARRIS SURFboard SB6190 DOCSIS 3.0 32 x 8 Gigabit Cable Modem | Comcast Xfinity, Cox, Spectrum | 1...
11 NETGEAR Renewed C3700-100NAR C3700-NAR DOCSIS 3.0 WiFi Cable Modem Router with N600 8x4 Download... NETGEAR Renewed C3700-100NAR C3700-NAR DOCSIS 3.0 WiFi Cable Modem Router with N600 8x4 Download...
12 Original Superbox Remote Control for Superbox s1,s2 pro,s3 pro(Without Voice) Original Superbox Remote Control for Superbox s1,s2 pro,s3 pro(Without Voice)
13 motorola Surfboard SB6121 Cable Modem (Renewed) motorola Surfboard SB6121 Cable Modem (Renewed)
14 XFinity Comcast XR15 Voice Control Remote for X1 Xi6 Xi5 XG2 Xid with Backlight XFinity Comcast XR15 Voice Control Remote for X1 Xi6 Xi5 XG2 Xid with Backlight
15 XFinity Comcast XR15 Voice Control Remote for X1 Xi6 Xi5 XG2 (Backlight) XFinity Comcast XR15 Voice Control Remote for X1 Xi6 Xi5 XG2 (Backlight)
16 TPLTECH Router Adapter Replacement for Comcast Xfinity Motorola/Arris Surfboard Netgear Asus TP-Link... TPLTECH Router Adapter Replacement for Comcast Xfinity Motorola/Arris Surfboard Netgear Asus...
17 MOTOROLA 16x4 Cable Modem, Model MB7420, 686 Mbps DOCSIS 3.0, Certified by Comcast XFINITY, Charter... MOTOROLA 16x4 Cable Modem, Model MB7420, 686 Mbps DOCSIS 3.0, Certified by Comcast XFINITY,...
18 12V Power Supply for Comcast Xfinity Motorola Surfboard Belkin Netgear Linksys TP-Link Archer... 12V Power Supply for Comcast Xfinity Motorola Surfboard Belkin Netgear Linksys TP-Link Archer...
19 Netgear Nighthawk Cable Modem WiFi Router Combo C7000-Compatibility Cable Providers including... Netgear Nighthawk Cable Modem WiFi Router Combo C7000-Compatibility Cable Providers including...
20 Arris Touchstone TM1602A DOCSIS 3.0 Upgradeable 16x4 Telephony Modem for TWC & OPTIMUM Arris Touchstone TM1602A DOCSIS 3.0 Upgradeable 16x4 Telephony Modem for TWC & OPTIMUM
Bestseller No. 1
12V AC Adapter Power Supply for Motorola Surfboard SB6141 SB6121 SB6120 SBG6580 SBG6580-2...
  • HZPOWEN products are CE / FCC / RoHS certified, tested by the manufacturer to match and / or exceed the OEM specifications.
  • Compatible with Comcast Xfinity Motorola Surfboard ARRIS SURFboard SBG6700AC SBG6700-AC SBG6580 SBG6580-G228 (570763-006-00)
  • Compatible with Belkin Wireless Router N150 N300 N450 N600 N750; Netgear N150 N600 N300; Compatible with MOTOROLA 579765-003 2247-N8 ADSL 2/2+...
  • Compatible with Motorola SB6120 Cable Modem SURFboard eXtreme SBG6580 SURFboard Wireless Cable Modem Gateway Ethernet SBG901 556315-005-00 SURFboard...
  • WARRANTY: 30 Days Refund - 24 Months Exchange
Bestseller No. 2
Replacement 12V Modem Power Cord AC DC Adapter Charger for Comcast Xfinity Motorola Surfboard...
  • 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...
  • This 12V2A power adapter, suitable for Motorola ARRIS SURFboard SB6190 SB6183 Sb5100 ,Comcast Xfinity Motorola Surfboard ARRIS SURFboard SBG6700AC...
  • 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...
  • Safety Guarantee; This adapters was made with the highest quality materials.OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over...
  • More energy-saving and power-saving, saving of electricity bill than ordinary equipment. 24hours response, 30 days money back guarantee, If you...
SaleBestseller No. 3
T-Power 12v AC DC Adapter Compatible with Comcast Xfinity Motorola Surfboard SBG6700AC SBG6580...
  • 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...
  • 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 ,,...
  • Motorola SB6120 Cable Modem SURFboard eXtreme SBG6580 SURFboard Wireless Cable Modem Gateway Ethernet SBG901 556315-005-00 SURFboard Gateway DOCSIS...
Bestseller No. 4
ARRIS SURFboard SB6121 4x4 DOCSIS 3.0 Cable Modem (Renewed)-Black
  • This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day...
  • Requires CABLE Internet Service, if not sure your provider is CABLE call them to confirm. Does NOT work with Charter cable provider.
  • Compatible with MOST Major CABLE providers like Comcast/Xfinity, Cox, Time Warner, Mediacom, Bright House.
  • Wired modem only, does NOT include WIFI Router or VOIP Telephone adapter. Gigabit Ethernet port to connect to computer or Router for fast downloads.
  • Internet download speeds up to 172 Mbps and upload speeds up to 131 Mbps based on your Cable provider service. Good for streaming Video and gaming on...
Bestseller No. 5
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.
SaleBestseller No. 6
Motorola MB7621 Cable Modem | Pairs with Any WiFi Router | Approved by Comcast Xfinity, Cox, and...
  • Model MB7621 is recommended for actual cable Internet service speeds up to 650 Mbps. Wirecutter rates this “the best modem for most people.” A...
  • This cable modem's 1 Gigabit Ethernet port connects to a WiFi router, computer, HDTV, game station, or streaming video device. Great for use with...
  • Requires cable Internet service.Approved by and for use with Comcast Xfinity and Xfinity X1, Cox, Charter Spectrum, Time Warner Cable, BrightHouse,...
  • Setup is fast and easy using the quick start guide.
  • Attractive, compact design minimizes shelf space, improves cooling, and extends product life while looking great in any home or office. A 2-year...
SaleBestseller No. 7
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,...
SaleBestseller No. 8
ARRIS Surfboard S33 DOCSIS 3.1 Multi-Gigabit Cable Modem | Approved for Comcast Xfinity, Cox,...
  • A Trusted Name in Home Connectivity: Better connectivity, better speed. The ARRIS SURFboard S33 DOCSIS 3.1 Cable Modem is designed to bring you...
  • Save Money: Own your modem and save. Reduce your cable bill up to $168 dollars per year in cable modem rental fees (Savings vary by cable service...
  • Modem Technology: DOCSIS 3.1 is the newest technology available from cable internet providers. Its 10x faster than DOCSIS 3.0, provides better...
  • Simple and Secure Set-up: Plug-in the device, download the SURFboard Central App, and follow the instructions to activate the modem. Connect to a...
  • Compatibility: The SURFboard S33 is compatible with major U.S. cable internet providers including Cox (Gigablast), Spectrum (Internet Gig), Xfinity...
Bestseller No. 9
Replacement Power Supply for Comcast Xfinity Motorola Surfboard, Adapter for Belkin Netgear Linksys...
  • HZPOWEN products are CE / FCC / RoHS certified, tested by the manufacturer to match and / or exceed the OEM specifications.
  • Compatibility: Adapter for Comcast Xfinity Motorola Surfboard SBG6580 SB6183 Sbg6580 SB6120 SB6121 SB6141 SBG6700AC SBG6782-AC SBG6782 SB6180 SBG901...
  • Adapter for Belkin Wireless Router N150 N300 N450 N600 N750; F9K1001 F9K1002; Adapter for Netgear N150 N300 N600 N450 N450-100NAS ; CM600...
  • Adapter for ARRIS SURFboard SB6190 SBG6400 SBG6700AC AC1600; Adapter for Cisco DPC3010 DOCSIS 3.0 8x4 Cable Modem; Adapter for Linksys E1200 E1500...
  • Service and Support: 30 Days Money Back Guarantee and Two year warranty. Please contact us with any questions or concerns
SaleBestseller No. 10
ARRIS SURFboard SB6190 DOCSIS 3.0 32 x 8 Gigabit Cable Modem | Comcast Xfinity, Cox, Spectrum | 1...
  • A Trusted Name in Home Connectivity: Better connectivity, better speed. The ARRIS SURFboard SB6190 DOCSIS 3.0 Cable Modem is designed to bring you...
  • Save Money: Own your modem and save. Reduce your cable bill up to $168 dollars per year in cable modem rental fees (Savings vary by cable service...
  • Modem Technology: DOCSIS 3.0 is an reliable, broadly available, and affordable technology that delivers high speed internet to your home devices.
  • Simple and Secure Set-up: Plug-in the device, download the SURFboard Central App, and follow the instructions to activate the modem. Connect to a...
  • Compatibility: The SURFboard SB6190 is compatible with major U.S. cable internet providers including Cox, Spectrum, Xfinity and others. It's approved...
Bestseller No. 11
NETGEAR Renewed C3700-100NAR C3700-NAR DOCSIS 3.0 WiFi Cable Modem Router with N600 8x4 Download...
  • Netgear Certified Refurbished product is manufacturer refurbished to work and look as new with 90 Day Warranty and email support. All accessories are...
  • DOCSIS 3.0 cable modem unleashes 8x faster download speeds up to 340 Mbps faster, smoother WiFi, and works with all major cable Internet providers...
  • Certified to work with Cable Internet Providers like XFINITY from Comcast, Time Warner Cable, Cox, Cablevision, Bright House Networks, & More (Not...
  • 8x4 channel bonding with Gigabit Ethernet Ports for fast wired, connections USB port to wirelessly share your hard drive.Double firewall protection...
  • "Netgear Refurbished product may have a removed serial number. You will need to state the product is refurbished (state the full part number) if...
Bestseller No. 12
Original Superbox Remote Control for Superbox s1,s2 pro,s3 pro(Without Voice)
  • superbox remote for superbox s2 pro,s1 pro
  • original superbox remote control SUYACAL
Bestseller No. 13
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,...
SaleBestseller No. 15
XFinity Comcast XR15 Voice Control Remote for X1 Xi6 Xi5 XG2 (Backlight)
  • Brand new unopened in plastic bag Xfinity XR15 Remote with voice Control for Xi6, Xi5, XG2 and X1 equipment.
  • Enable a voice control for your convieniece in use.
  • The Xfinity Voice Remote (models XR15) has an automatic pairing, which will make your installation easy.
  • Easy access to accessibility features like Closed Captioning, video description and voice guidance
  • The batteries are included in the pack.
Bestseller No. 16
TPLTECH Router Adapter Replacement for Comcast Xfinity Motorola/Arris Surfboard Netgear Asus TP-Link...
  • [Compatibility] 12V 2A DC Power Supply Adapter Compatible with Netgear, Linksys, Asus, Motorola, TP-Link, Motorola/Arris Surfboard Docsis Cable Modem...
  • [Parameters] Input:100-240V, Output:12V 2A. Intelligent Circuit Design Always Protect Devices and Charger from Over-Charged/Current/Voltage or Short...
  • [Package Included] 12V 2A 24W AC TO DC Adapter x 1. Different Plugs Meet More Choices to Small Digital Devices in Daily Life.
  • [Safety Certified] UL/CE/FCC/RoHS Certified. Build in Dynamic IC, Charger IC & Power Fuse for Short Circuit, Over Voltage Protection, Over Temperature...
  • [After-Sales] 30 days money back guarantee, 12-month warranty free replacement. Any question please e-mail us, We will reply back within 24h.
Bestseller No. 17
MOTOROLA 16x4 Cable Modem, Model MB7420, 686 Mbps DOCSIS 3.0, Certified by Comcast XFINITY, Charter...
  • This 16x4 DOCSIS 3.0 cable modem provides speeds up to 686 Mbps, sixteen times faster than DOCSIS 2.0. A Full-Band Capture digital tuner ensures a...
  • Cable modem's Ethernet port connects to a computer, HDTV, game station, or wireless router. (This Model MB7420 cable modem does NOT have a built-in...
  • Requires cable Internet service. Certified by Comcast XFINITY for residential speeds up to Extreme 300, by Comcast Business for speeds up to Deluxe...
  • Setup is fast and easy with a few quick steps set out in a Quick Start guide. Experienced USA-based customer support specialists are there to help if...
SaleBestseller No. 18
12V Power Supply for Comcast Xfinity Motorola Surfboard Belkin Netgear Linksys TP-Link Archer...
  • FEATURES / POWER SPECS : Only Pwr+ Chargers Have Extra Long 6.5 Ft Power Cords / Smart Power: 12V 2A / Connector size: 5.5x2.5mm / Steel-Reinforced...
  • COMPATIBILITY: Belkin Wireless Router N150 N300 N450 N600 N750; F9K1001 F9K1002 F9K1102 F9K1105 F9K1116 F9K1124; Netgear N150 N300 N600 N450...
  • ARRIS SURFboard SB6190 SBG6400 SBG6700AC AC1600; Cisco DPC3010 DOCSIS 3.0 8x4 Cable Modem; Linksys E1200 E1500 E2000 E2100l E2500 E3000-rm E3200 E4200...
  • SAFETY / UL LISTED: Tested, Approved and Certified by UL. E475124 number is unique to PWR+ and easily verifiable on UL website. Amazon prohibits sale...
  • WARRANTY: 30 Days Refund - 24 Months Exchange. PWR+ is WA, USA based company. We are friendly Customer Support Experts
Bestseller No. 19
Netgear Nighthawk Cable Modem WiFi Router Combo C7000-Compatibility Cable Providers including...
  • input voltage:120 -240V
  • COMPATIBLE WITH ALL MAJOR CABLE INTERNET PROVIDERS: Including certification by Xfinity by Comcast, COX, and Spectrum. NOT compatible with Verizon,...
  • SAVE MONTHLY RENTAL FEES: Model C7000 replaces your cable modem and WiFi router saving you up to $150/yr in equipment rental fees. System Requirements...
  • BUILT FOR FAST SPEED: Best for cable provider plans up to 400 Mbps speed
  • FAST Wi Fi PERFORMANCE: Get up to 1800 sq ft wireless coverage and 30 devices connected with AC1900 speed (up to 1900 Mbps)
Bestseller No. 20
Arris Touchstone TM1602A DOCSIS 3.0 Upgradeable 16x4 Telephony Modem for TWC & OPTIMUM
  • Compatible with Time Warner Cable, Charter, Spectrum, Optimum Cable, Cablevision, and Other US Cable Internet Service Providers
  • Features 16x4 Channel Bonding & Embedded Multimedia Terminal Adapter (E-MTA)
  • Includes 2 Primary VoIP Telephone Lines + 1 Gigabit Ethernet Port
  • DOCSIS 3.0 Cable Modem Supporting Wired Download Speeds up to 960Mbps
  • Telephone Modem Only - WiFi Router Purchased Separately

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  2. Features: What bells and whistles matter for an sb6121 comcast?
  3. Specifications: How powerful they are can be measured.
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FAQ:

Q: What is sb6121 Xfinity router?

A: This unit (SB6121) is among a few of the 3-star certified models (highest certification), according to Comcast’s own research (mydeviceinfo.xfinity.com). That information gave me more confidence in my choice, so I thought I’d share here.

Q: Does the sb6141 modem support 8 channels?

A: I have since purchased the SB6141 model of this modem, that supports 8 channels. Be aware that Xfinity has announced that several of their markets will be upgraded to DOCSIS 3.1 by the end of 2016. If you live in a major metropolitan area, you might consider holding off on purchasing a new modem until those modems become available.

Q: What are the dimensions of the Arris sb6121?

A: ARRIS Series SB6121 Item model number SB6121 Item Weight 1.3 pounds Product Dimensions 2 x 6.4 x 8.7 inches Item Dimensions LxWxH 2 x 6.4 x 8.7 inches Color Black Computer Memory Type DDR3 SDRAM Department Electronics & Computers Manufacturer Motorola ASIN B004XC6GJ0 Is Discontinued By Manufacturer No Date First Available June 1, 2011

Q: What is the surfboard sbg6700-ac?

A: The SURFboard SBG6700-AC is 3 products in 1: a DOCSIS 3.0 Cable Modem, Dual-Band Concurrent 802.11ac Wi-Fi Access Point and 2-Port Gigabit Ethernet Router. With download speeds up to 343 Mbps and Wi-Fi speeds up to 1600 Mbps your gaming and video streaming just got better! Beamforming technology provides maximum Wi-Fi coverage and performance.