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The Best Sb6121 Modem of 2023 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best Sb6121 Modem of 2023. Check our ranking below.

2,998 Reviews Scanned

SaleRank No. #1

Motorola SURFboard SB6121 Cable Modem (SB6121)

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.

Rank No. #2

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 warranty. IMPORTANT NOTEL: A few units might show the brand as Motorola (and not Arris) as Arris had acquired Motorola for 2 years; hence it will be the same product and the same model
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 multiple devices at a time.

Rank No. #3

AC Adapter for Motorola Surfboard Sb6141 Sb6121 Sbg6580 Cable Modem Power Supply

Compatibility: This Power adapter will work with Motorola SURFboard Sb6141 Sb6121 Sbg6580 Cable Modem Power Supply
Input Voltage: 100~240VAC 50/60Hz, Worldwide Use Output: DC
Brand New AC to DC Power Adapter
Safe standard: FCC，CE, RoSH
Short-circuit Protection, Over Voltage Protection, Over Heat Protection

Rank No. #4

T-Power 12V AC DC Adapter for 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
Ubiquiti Unifi Security Gateway (USG), Ubiquiti Networks USG Unifi 1000Mbps Security Gateway, gp-f120-100 power supply, Ubiquiti EdgeMax EdgeRouter Lite erlite-3, Ubiquiti EdgeRouter Lite ERLite-3 3-Port Networks X ER-X ERX EdgeMax 5-Port Advanced Gigabit Router Edge Max Router

Rank No. #5

Replacement 12V Modem Power Cord AC DC Adapter Charger for Comcast Xfinity Motorola Surfboard SBG6700AC SBG6580 SB6120 SB6121 SB6141 SB6180 SBG6580, SB6183 SBG6782 SBG6782 900 & More Modem 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 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. #6

UpBright 12V AC/DC Adapter Compatible with ARRIS SURFboard SB8200 SB00DAD38200 DOCSIS 3.1 SB6190 SB00DXD6190 SBG10 SBG6580 SB6183 592431-003 SBV2402 SB6141 SB6121 SB6120 D3.0 Modem Router Power Supply

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 Refund. 24 Months Exchange.
UpBright New Global 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 +12VDC 2A 24W DC12V 2000mA 12.0V 2.0A Switching 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 listing ASIN: B07DY16W2Z : ARRIS SURFboard SB8200 DOCSIS 3.1 Gigabit Cable Modem, Approved for Cox, Xfinity, Spectrum & others , White , Max Internet Speed Plan 2000 Mbps; B07M8BNVSD :ARRIS Surfboard Docsis 3.1 Cable Modem - SB8200-Rb (Renewed)

Rank No. #7

AC Adapter for Motorola Surfboard SB6121 SB6141 SB6180 Cable Modem Power Supply

Brand New, High Quality Replacement AC Wall Power Charger Adapter
Input: AC 100-240V 50/60Hz Auto (Worldwide AC Input)
Over Voltage Protection, Over Heat Protection

Rank No. #8

AMSK POWER Ac Adapter for Motorola Surfboard SB6120 SB6121 SB6141 SB6180 SBG6580 SBG901 900 Cable Modem dta-100 DCT-700 503913-007 MT-20-21120-A04F Charger DSL Cable Modem Wireless

Power: Input 120V-240V/ 50-60Hz Output: 12V 2A 24Watt Connector: 5.5mm*2.5mm
AC adapters are CE, FCC, RoHS certified for safety.
Protection: Short circuit, over current protection, over voltage protection, over temperature protection. Designed to meet or exceed your original manufacturer's ac adapter
Warranty info: Order your replacement ac adapter backed by our 30 day money back guarantee, 12 months warranty; 24/7 email support, free exchange.
Package includes: 1 Ac Adapter ,1 Cord

Rank No. #9

ARRIS SURFboard SB6141-RB 8x4 DOCSIS 3.0 Cable Modem (Renewed)

Approved on Comcast Xfinity, Spectrum (Charter, Time Warner, Brighthouse Networks), Cox, Mediacom, Suddenlink and most other US Cable Internet Providers. NOT compatible with Verizon, AT&T or Centurylink. REQUIRES Internet Service.
Wired modem only. Does not include WiFi router or VOIP Telephone adapter. Gigabit Etherent port to connect to PC or Router.
8 Download Channels and 4 Upload Channels capable of up to 343 Mbps download and 131 upload speeds. Recommended for Internet Plans up to 100 Mbps.
Supports both IPv4 and IPv6, the latest standard.
90 Day Warranty. ARRIS Certified Refurbished. US Technical support. ARRIS Certified Refurbished products will ALWAYS be branded ARRIS, Never Motorola! If you get Motorola branded product they are illegitimate, need to be returned to Seller and Reported to Amazon

Rank No. #10

12V AC Adapter Power Supply for Motorola Surfboard SB6141 SB6121 Netgear/Belkin N150 N300 N450 N600 N750 Comcast Xfinity Linksys Velop TP-Link Arris Wireless Router Power Cord

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+ Wireless-N Modem Gateway - Black // Sb5100, Sb5120, Sb5101, Sb5101u, Sb5101u, Sbg901, Sb6120, Sb6121, Sb6141, Sb6180, Sbg6580,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;
Compatible with 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
WARRANTY: 30 Days Refund - 24 Months Exchange

SaleRank No. #11

ARRIS SURFboard SB6190 DOCSIS 3.0 32 x 8 Gigabit Cable Modem , Comcast Xfinity, Cox, Spectrum , 1 Gbps Port , 800 Mbps Max Internet Speeds , Easy Set-up with SURFboard Central App , Black

Modem Technology: DOCSIS 3.0 is a 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 Wi-Fi router for networking.
Compatibility: The SURFboard SB6190 is compatible with major U.S. cable internet providers including Cox, Spectrum, Xfinity and others. It's approved for cable internet speed plans up to 800 Mbps. Check your Internet Service Provider (ISP) website to confirm compatibility.
cable modem 3.0 compatible internet computer networking modems approved docsis docis3.0 1 gig best for high speed with fiber optic gaming gigabit wifi 6 voice 800 mbps speeds sb 6190 32 x 8 1gbps port
DOCSIS 3.0 Modem Only

SaleRank No. #12

ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem , Approved for Comcast Xfinity, Cox, Charter Spectrum, & more , Two 1 Gbps Ports , 1 Gbps Max Internet Speeds , 4 OFDM Channels

A Trusted Name in Home Connectivity: Better connectivity, better speed. The ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem is designed to bring you superior connectivity, increase your network capability and provide faster streaming and downloading throughout your home. From a trusted brand with over 260 million modems sold and growing. .Telephone Port : None. HD Multi-Media Streaming : Yes.
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 provider). Certified for use with most U.S. cable internet service providers. For a complete list see additional details below.
Modem Technology: DOCSIS 3.1 is the newest technology available from cable internet providers. Its 10x faster than DOCSIS 3.0, provides better security, reduces lag while gaming & enables multi-gig networking (ability to run fast speeds on your copper cable from your internet provider).
System requirements 1. High-speed Internet access account 2.Web browser access – Internet Explorer, Google Chrome, Firefox, or Safari 3. Compatible operating systems: 4. Windows 10 5. Windows 8 6. Windows 7 Service Pack 1 (SP1) Note: Although older versions of Microsoft Windows operating systems are no longer specifically supported, they should still function with your SB8200. a.Macintosh 10.4 or higher b. UNIX c. Linux
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 Wi-Fi router for networking.

SaleRank No. #13

Motorola MB8600 DOCSIS 3.1 Cable Modem - Approved for Comcast Xfinity, Cox, and Charter Spectrum, Supports Cable Plans up to 1000 Mbps | 1 Gbps Ethernet Port

Top Internet Speeds for all Multi-gigabit Speed Tiers - Wirecutter recommends this model as the best cable modem for people using Gigabit Internet plans. Built-in DOCSIS 3.1 and DOCSIS 3.0 32x8 capabilities give top Internet speeds for all cable Internet services.
Save Money - Eliminate up to 168 dollars per year in cable modem rental fees (Savings are shown for Comcast Xfinity and vary by cable service provider.) Approved by Comcast Xfinity and Xfinity X1, Cox, and CableOne for all speeds including Comcast Gigabit services and Cox Gigablast. Not compatible with RCN. No cable modem is compatible with fiber optic, DSL, or satellite services, available from Verizon, AT&T, CenturyLink, Frontier, and others.)
Flexible Compatibility - Pair with any Wi-Fi router you’d like, including Whole Home Wi-Fi or Mesh routers like eero, Google Wi-Fi, and Orbi. A 10/100/1000 Gigabit Ethernet port allows connection of any SINGLE device with an Ethernet port including a router, Windows or Mac computer, HDTV, or game station. This cable modem does not have a built-in wireless router or telephone call capability.
Proactive Network Security - A broadcom chipset provides advanced security from denial-of service attacks.
Active Queue Management (AQM) - AQM significantly reduces Internet latency on both DOCSIS 3.1 and 3.0 services, resulting in faster page loads for all Web traffic and enhanced interactive applications like online gaming and video conferencing. The MB8600 also includes a full-band capture digital tuner to enhance speed and save energy.

SaleRank No. #14

ARRIS SURFboard - SB6183 - Renewed - DOCSIS 3.0 16x4 Gigabit Cable Modem, Comcast Xfinity, Cox, Spectrum & more, 1 Gbps Port, 400 Mbps Max Speed, Easy Set-up with SURFboard Central App - Renewed

Modem Technology/Simple Set-Up: DOCSIS 3.0 is a reliable, broadly available & affordable technology that delivers high speed internet to your home devices. Plug-in the device, download the SURFboard Central App & follow the instructions to activate.
Compatibility: Compatible with major U.S. cable internet providers including Cox, Spectrum, Xfinity and others. It's approved for cable internet speed plans up to 400 Mbps. Check your Internet Service Provider website to confirm compatibility.
Ethernet Ports/Warranty: Has one 1-Gigabit ethernet port to connect to a Wi-Fi router or other wired device. Product ships with 2-Year Limited Warranty. Live Chat and Phone Support available 8am -1am EST.
modem cable modem xfinity cox spectrum mediacom suddenlink time warner brighthouse motorola cable modem 3.0 compatible internet computer networking modems approved docsis docis3.0 1 gig best for high speed with fiber optic gaming gigabit wifi 6 voice 400 mbps 1 gbps port sb 6183 16 x 4 app
DOCSIS 3.0 Modem Only

Rank No. #15

12V Power Supply for Comcast Xfinity Motorola Surfboard Belkin Netgear Linksys TP-Link Archer Wireless Router - UL Listed, 6.5 Ft Long Cord Charger AC Adapter

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 Tip for Extended Usability / Made in Taiwan
COMPATIBILITY: Belkin Wireless Router N150 N300 N450 N600 N750; F9K1001 F9K1002 F9K1102 F9K1105 F9K1116 F9K1124; Netgear N150 N300 N600 N450 N450-100NAS ; CM600 CM600-100NAS, DM200-100NAS for Comcast XFINITY; Comcast Xfinity Motorola Surfboard SBG6700AC SB6183 SBG6782 SBG6782-AC SB6141 SB6121 SB6120 SBG6580 SBG6580-2 SB5101U SB5101I SB5100 SB5120 SB5101 SB6180 SB6182 SBG901, Cable Modem MB7220 MB7420 MG7310 MG7315 MG7540 MG7550 MG7550-10 N300 N450 DTA-100 DCT-700 P/N 503913-007, MT-20-21120-A04F
ARRIS SURFboard SB6190 SBG6400 SBG6700AC AC1600; Cisco DPC3010 DOCSIS 3.0 8x4 Cable Modem; Linksys E1200 E1500 E2000 E2100l E2500 E3000-rm E3200 E4200 ; EA3500 EA4500 EA6200 EA6350 ; CM3008 CM3016 CM3024 DPC3008 ; 4400N 54GP D12-50-A RT31P2 RV042 SPA9000 WAG200G WAG300N WAG54G WAG54GS WCG200 WGA54AG WKPC54G WPS54GU2 VERSION 2 WRK54G WRP200 WRT150N WRT160N WRT300N WRT54G/S WRT54GL WRT54GS; TP-Link Archer A7 C5 C7 C9 C900
SAFETY / UL LISTED: Tested, Approved and Certified by UL. E475124 number is unique to PWR+ and easily verifiable on UL website. Amazon prohibits sale of electronics that do not meet UL safety requirements: UL logo and UL number should be displayed on the product's label and packaging. Safety of your equipment, business, home and family depends on the quality of your electronics.
WARRANTY: 30 Days Refund - 24 Months Exchange. PWR+ is WA, USA based company. We are friendly Customer Support Experts

Rank No. #16

T POWER 12V 6.6ft Ac Adapter for NETGEAR & Motorola Arris Surfboard DOCSIS Cable Modem WiFi Router Power Supply Cord Charger

T-Power - manufactured with the highest quality materials , POWER SPECS : Input Voltage Range: AC 100V - 240V , Power: 12V 2A
Compatible Models: NETGEAR Nighthawk X4 R7500 R7000 C3000 EX6200 AC2350 AC1900 N300 FVS318 GS108 Smart Extender Router , NETGEAR CM400 CM500 CM600 CM700 DOCSIS 3.0 Cable Modem
Motorola 16x4 Cable Modem, Model MB7420 , MB7420-10 , MB7420-10-W , Motorola Surfboard SB6120 SB6121 SB6141 SB6180 SBG6580 SBG901 900 Cable Modem dta-100 DCT-700 PN# 503913-007 Model: MT-20-21120-A04F
AD898F20 PN: DSA-20P-10, 332-10011-01 , 332-10613-01 DSA-0151F-12 , Netgear DGN2200 N 300 Router, DSA-20P-10 332-10011-01 DSA-0151F-12 , NetGear 8-Port 10,100 Switch (FS108)
U.S. Robotics USR3453C Courier 56K Business Modem ; USR4000 Call Director ; USR5686G Wireless Broadband Router DSL Cable Modem , Compatible With Belkin Wireless Router N150 N300 N450 N600 N750; Netgear N150 N600 N300;

Rank No. #17

12V Power Supply for Comcast Xfinity Motorola Surfboard, Belkin, Netgear, TP-Link Wireless Router, 12Volt Cable Modem Ac Adapter Charger (6ft Long Cord)

【Specifications】Input: AC 100V - 240V 50/60Hz; Output: DC 12V, Cable length: 6 feet
【Compatible with】Motorola ARRIS SURFboard SB6190 SB6183 Sb5100, Sb5120, Sb5101, DOCSIS 3.0 Cable Modem; Comcast Xfinity Motorola Surfboard SBG6700AC / SBG6700-AC SBG6782 / SBG6782-AC SB6120 SB6121 SB6141 SBG6580 SBG6580-G228 (570763-006-00) SBG6580-2 SB5101U SB5101I SB5100 SB5120 SB5101 SB6180 SB6182 SBG901 900 Cable Modem DTA-100, DCT-700 P/N 503913-007, MT-20-21120-A04F;
【Work for】Belkin Wireless Router N150 N300 N450 N600 N750; F9K1001 F9K1002; Netgear N150 N300 N600 N450 N450-100NAS; Netgear CM500 CM500-100NAS DOCSIS 3.0 High Speed Cable Modem; CM600 CM600-100NAS, DM200-100NAS for Comcast XFINITY; TP-LINK Wireless Router / TP-Link Archer A7 C5 C7 C9 C900;
【Safety protection】Automatic overload cut-off, Over-voltage cut-off, Over-temperature cut-off, Short circuit protection.
【After-sales warranty policy】WindSwallow friendly customer service with a 36-month hassle-free warranty. If you have any questions, please contact us, we will give you a satisfactory answer as soon as possible within 24 hours.

Rank No. #18

Replacement Power Supply for Comcast Xfinity Motorola Surfboard, Adapter for Belkin Netgear Linksys TP-Link Archer Wireless Router, Adapter for Comcast Xfinity Motorola Surfboard SBG6580 Charger

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 900
Adapter for Belkin Wireless Router N150 N300 N450 N600 N750; F9K1001 F9K1002; Adapter for Netgear N150 N300 N600 N450 N450-100NAS ; CM600 CM600-100NAS, DM200-100NAS for Comcast XFINITY; Adapter for Comcast Xfinity Motorola Surfboard SBG6700AC SB6183 SBG6782 SBG6782-AC SB6141 SB6121 SB6120 SBG6580 SBG6580-2 SB5101U SB5101I SB5100 SB5120 SB5101 SB6180 SB6182 SBG901, Cable Modem MB7220 MB7420 MG7310 MG7315 MG7540 MG7550 MG7550-10 N300 N450 DTA-100 DCT-700 P/N 503913-007, MT-20-21120-A04F
Adapter for ARRIS SURFboard SB6190 SBG6400 SBG6700AC AC1600; Adapter for Cisco DPC3010 DOCSIS 3.0 8x4 Cable Modem; Adapter for Linksys E1200 E1500 E2000 E2100l E2500 E3000-rm E3200 E4200 ; EA3500 EA4500 EA6200 EA6350 ; CM3008 CM3016 CM3024 DPC3008 ; 4400N 54GP D12-50-A RT31P2 RV042 SPA9000 WAG200G WAG300N WAG54G WAG54GS WCG200 WGA54AG WKPC54G WPS54GU2 VERSION 2 WRK54G WRP200 WRT150N WRT160N WRT300N WRT54G/S WRT54GL WRT54GS; Adapter for TP-Link Archer A7 C5 C7 C9 C900
Service and Support: 30 Days Money Back Guarantee and Two year warranty. Please contact us with any questions or concerns

SaleRank No. #19

ARRIS SURFboard - SB6190 - Renewed - DOCSIS 3.0 32 x 8 Gigabit Cable Modem, Comcast Xfinity, Cox, Spectrum, 1 Gbps Port, 800 Mbps Max Speeds, Easy Set-up with SURFboard Central App - Renewed

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.
arris
32x8 Cable Modem

Rank No. #20

PKPOWER 12V AC Power Adapter Power Supply for Comcast Xfinity Motorola Surfboard Modem DTA-100 DCT-700 SB6120 SB6121 SB6141 SB6180 SBG6580 SBG6700AC

Last update on 2023-08-16 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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Specifications: How powerful they are can be measured.
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FAQ:

Q: What is the best modem on the market?

A: Motorola ● Cisco ARRIS NETGEAR Linksys Ubee (Ambit) D-Link TP-Link Asus Toshiba Actiontec

Q: What is the average speed of a cable modem?

A: A typical residential cable modem connection ranges anywhere from 3 to 15 Mbps ( Megabits per second) downstream, and 1-3 Mbps upstream. Cable modem speed is not guaranteed and often fluctuates, since the available bandwidth is shared between many users on the same node.

Q: How do I test my cable modem?

A: To test your modem: On the main menu under Diagnostics, select Test Modem. Select one of the following tests by clicking the corresponding radio button: Performs handshake and offhook tests. If these tests fail, run the handshake test and the offhook test individually to determine the reason for the failure.