Motorola SURFboard SB6121 DOCSIS 3.0 Cable Modem – High-Speed Internet
Real photos | Tested
Shipping
Depends on item size and packaging.
Returns
Limited 14-day coverage on eligible issues.
Local pickup
Available in Taylorsville, UT.
Included and condition
Included
- Motorola SURFboard SB6121 Cable Modem
- Power adapter
- Ethernet cable
- Quick start guide
Condition
- Graded New Open Box. Use the listing photos for final cosmetic review.
- No major extra issues are called out in the listing text beyond what is shown in the photos.
Pickup and support
Pickup location
5500 S Redwood Rd Ste 203
Taylorsville, UT 84123
Mon-Sat 11AM-6PM
Call or text
Share the SKU at 3857156888 if you want a quick confirmation before ordering or pickup.
Get directionsProduct overview
Get reliable high-speed internet connectivity with the Motorola SURFboard SB6121 DOCSIS 3.0 Cable Modem. This pre-owned modem is in 'New Open Box' condition, ensuring you receive a quality product at a fraction of the retail price. With download speeds of up to 172 Mbps and upload speeds of 131 Mbps, it's designed for smooth streaming, gaming, and downloads. The modem features 4-channel bonding for stable connections even during peak hours, making it compatible with major U.S. cable providers. Enjoy peace of mind with our 14-day return policy and secure checkout. Plus, we offer free shipping on orders over $150, and this item ships from Salt Lake City, UT within 1-2 business days.
Key features
- ✓New Open Box condition
- ✓Up to 172 Mbps download speed
- ✓131 Mbps upload speed
- ✓4-channel bonding for stability
- ✓Compatible with major U.S. cable providers
- ✓Ideal for streaming and gaming
Product details
What's included
- 📦Motorola SURFboard SB6121 Cable Modem
- 📦Power adapter
- 📦Ethernet cable
- 📦Quick start guide
- 📦Box not included for used items
Confirm exact contents in the product photos. Accessories vary per unit.
🌐 Why buy on TamDo.us
Buying pre-owned electronics on TamDo.us means lower prices than retail without sacrificing quality. We photograph each item in our Utah warehouse so you see exactly what you're buying — not stock images. Orders ship fast (1-2 business days) with tracking, and we offer 14-day returns on material defects. Need to inspect in person? Visit our local store at TamDous.com.
Frequently asked questions
What is the condition of the modem?
The Motorola SURFboard SB6121 is in 'New Open Box' condition.
How fast is the internet speed with this modem?
It offers up to 172 Mbps download and 131 Mbps upload speeds.
Is this modem compatible with my cable provider?
Yes, it is compatible with major U.S. cable providers.
What is the return policy?
We offer a 14-day return policy for your peace of mind.
How long does shipping take?
This item ships from Utah within 1-2 business days.
Is there free shipping available?
Yes, we offer free shipping on orders over $150.
What payment methods are accepted?
We provide a secure checkout process with various payment options.
