Our Best Modem Sb6121 [Top 15 Picks]

Are you feeling as if you’re unable in making an educated choice regarding which is the best modem sb6121 you should choose out of the many options? It’s really difficult to decide what you should consider and if it’s worthy of your money, particularly when it’s your the first one you purchase.

This is where our buying and review guide can help you saving you money. To assist you in making the most effective purchase, we’ve put together this list of the modem sb6121 as along with buying guides.

Look over them to identify the ones that are reliable and reliable prior to purchasing. If you’re seeking something budget-friendly, or something that’s not included in the package, we’ve got it for you.

Follow This Table For Quickly Selection A modem sb6121

Top 15 Best modem sb6121 Reviews for 2022

1. ARRIS SURFboard SB6121 4×4 DOCSIS 3.0 Cable Modem -Retail Packaging-Black

Features :

  • 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.
  • Internet speeds based on your Cable providers service – up to 172 Mbps download and 131 Mbps upload. 4 Download and 4 Upload Channels.

Additional Info :

Color Black
Item Dimensions
Height 8.7
Width 6.4
Length 2
Weight 0.45
Release Date 2013-06-01T00:00:01Z

2. 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

Features :

  • 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

Additional Info :

Item Dimensions
Height 1.25
Width 1.75
Length 3.25
Weight 0.00661386786

3. ARRIS SURFboard SB6121 4×4 DOCSIS 3.0 Cable Modem (Renewed)-Black

Features :

  • 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.

Additional Info :

Color Black
Item Dimensions
Height 8.7
Width 6.4
Length 2

4. 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

Features :

  • 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 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)

Additional Info :

Color Black
Item Dimensions
Height 1
Width 3
Length 3
Weight 0.25

5. PwrON 6.6 FT 12V AC Adapter for Arris Surfboard Cable Modem SB6121 SB6141 SB6120 SB6180 SB6183 SB5120 SB5100 SB5101& 2210-02 DSL Modem

Features :

  • AC Input: 100 ~ 240V 50~60Hz
  • DC Output: 12V 1000mA (750 mA compatible)
  • Cord Length: 6.6 FT/2 M
  • Industry Quality : Over Voltage Protection, Over Heat Protection
  • Compatible With Arris Modem SB5100, SB5101,SB5101U,SB5120; 2210-02

6. 12V AC DC Power Adapter Compatible for Motorola Comcast Xfinity Surfboard Cable Modem SBG6700AC SBG6580 SB6120 SB6121 SB6141 SB6180 SBG901, TP-Link Linksys Belkin Netgear Wireless Router WiFi System

Features :

  • Power specifications: Input: AC 100V-240V (50~60Hz), Output: DC 12V 2A (1A~2A Compatible). Barrel plug size: 5.5mm x 2.1mm (applicable 2.5mm), Cable length: 6 feet.
  • Wide compatibility & Modem: Motorola Comcast Xfinity ARRIS SURFboard SB5100, SB5120, SB5101, SB5101U, SB6120, SB6121, SB6141, SB6180, SB6183, SB6190, SBG6580, SBG6782, SBG900, SBG901, SBG6580-G228, SBG6700-AC SBG6782-AC Cable Modem, and more Modem models.
  • Wide compatibility & Wireless Router: Belkin N150 N300 N450 N600 N750; Netgear N150 N600 N300; Nighthawk X4 R7500 R7000; ProSafe FVS318 GS108, GS108; Motorola ADSL2 ADSL2+; Linksys E1200 E1500 E2000 E2100l E2500; TP-LINK Wireless Router, and more Wireless Router models.
  • Safety protection: Automatic Overload protection, Over voltage protection, Over temperature protection, Short circuit protection. No fire hazard, low temperature operation, stable current.
  • After-sales warranty policy: If you have any questions, please contact us! We are responsible for every product sold.

Additional Info :

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

Features :

  • 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

Additional Info :

Item Dimensions
Weight 0.5

8. Generic Compatible Replacement AC Adapter Charger for Motorola Surfboard SB6121 SB6141 SB6180 Cable Modem Power Cord

Features :

  • High Quality Replacement Charger Part
  • Over Voltage and Current Protection
  • AC 110V-220V Wide International Travel Voltages Input

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

Features :

  • 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
  • 90 days money back guarantee. 1 year product WARRANTY. Shipping from USA!
  • Please contact us with any questions regard this product – we are here to help!

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

Features :

  • 【Product Specs】: Input Voltage Range: AC 100V – 240V 50-60Hz. The length of cable: 6.6ft long cable.
  • 【Compatible with】: 12V Power Adapter for Comcast Xfinity Motorola Surfboard SB6120 SB6121 SB6141 SB6180 SBG6580 SB6183 SBG6700AC SBG6782 SBG6782-AC SBG901 900 Cable Modem dta-100 DCT-700 Model: MT-20-21120-A04F.
  • 【Fits for】:Comcast Xfinity Motorola ARRIS Surfboard MR150CNM Modem DTA-100 DCT-700 SBG6580-G228,570406-002-00, 570763-006-00, 588173-003-00, 567005-005-00, 556315-005-00.
  • 【Premium material】: Made of cutting-edge materials and featuring with V-0 grade flame retardant, OVP, OCP, SCP Protection, it would be much secure than others. The life of the power supply is longer than other products, making it a durable and affordable product.
  • 【Safety Performance】 :PKPOWER AC adapter charger has passed the FCC test with certificates. The superior quality of this charger totally eliminates all safety hazards which can provide you with an extremely safe and pleased charging experience.

How to Choose modem sb6121

Now it’s time to take you through our well-researched buying guide that includes the touchstones you need to find your desired modem sb6121.

Quality Durability

If you’re concerned about the quality product, make sure to check its compliances or certifications. Having a product certification (such as UL or CE) ensures that the product manufacturing has maintained good practices and its quality is controlled according to the standards.

A high-quality product also tends to be more durable. And you must choose a durable product as it can save you from the hassles of repairing or replacement. And could prove to be economical in the long run.

Features Benefits

This is the factor you buy a product for. So here, the important part is you need to assess the product features to make sure they really benefit you. Some products come with too many features, but most of them could be demerited.

So why pay for something that won’t really benefit you? Be specific with your requirements and find the most suited product accordingly. If the vendor allows, try to get it tailored according to your needs.

Cost Comparison

The cost comparison is an important factor while you’re buying the best modem sb6121. We often emphasize cost comparison charts as it allows you to compare prices from different vendors. Such a chart can help you make the buying decision carefully and find the best deal on a product.

Since it’s important to balance the cost and other factors like quality, features, and convenience, comparing the costs can help you find the most competitive option.

After Sales Service

After making the initial purchase, you may need the after-sales service for a lot of things. Such as guidance on product usage or fixing an issue. So make sure your product manufacturer or vendor provides a good after-sales service.

If you’re satisfied with the after-sales, you’ll probably be a satisfied & loyal customer who’ll help increase the brand value of the company with positive word of mouth. That’s why you’ll see a company or product receive the most negative reviews when they don’t have a responsive and communicative after-sales service team.

Warranty Policy

Although the warranty is a sign of a credible product, many good products aren’t covered by the warranty policy. But if you’ve got two choices, where one’s covered by warranty, and the other is not, you must go with the one covered by the warranty.

The warranty ensures that a Certified Service undertakes your product repairing or replacement as per terms in the policy. Some vendors even offer a money-back guarantee where you can get a full refund in case the product fails to satisfy you within a given time.

Honest Customer Feedbacks

The traditional reviews aren’t profound enough to give a clear picture of the user experience. They talk extravagantly about the good sides and trivially about the negative sides. If a product is good, you should say it is good. But an honest review should highlight inconveniences, even the smallest ones that come along while using it.

Minor negative points won’t probably hold you back from buying the product, but it’ll prepare you to deal with them. So always check for honest reviews that provide attention to every little detail.

FAQs

Let’s get some FAQs answered related to the best modem sb6121.

What’s an extended warranty, and is it good?

An extended warranty is a policy that ensures the cost of repair or replacement of a product for a period beyond what’s offered by the vendor. But extended warranties aren’t really worth it since they often come with an additional cost. If you see the modem sb6121 manufacturer is offering an extended warranty, it’s better to avoid it. The reason is you’ve to purchase it for terms that your product mightn’t face in its entire service life.

What’s the most important factor to look for in this product?

There are a few of them, but studies suggest people think customer reviews to be the most crucial factor, besides features price, when buying a product. So if you’re looking to buy the modem sb6121 check out the customer reviews and ponder upon them before making your decision.

Should I listen to my guts or rely on data, stats, and reviews while buying this product?

Most buyers are impulsive when they’re up for buying something. You might feel tempted to go for a certain option by listening to your guts. But we’d recommend you to rely more on data, stats, and reviews instead of the guts while buying anything like the modem sb6121. This way, you can reevaluate your choices and filter out the better option.

The Bottom Line

We’d like to say that our modem sb6121 review and buying guide was designed to provide you with all the information you need to make an informed decision about whether the product is right for you.

We hope this has helped you and that you’ll continue using our site as your go-to source for product reviews and buying advice. Thanks again for taking the time to read our buyer’s guide.

Finally, we would like to remind you that user reviews are based on personal experiences and opinions, so use them to walk yourself through possible solutions, but do not use them as definitive answers.

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