
eBay offers the open-box Netgear DOCSIS 3.1 Cable Modem for $34.96 via promo code "VIPJULYTAKE8". That's $142 under the cost of a factory-sealed unit. Shipping is free. A 90-day VIP Outlet warranty applies. Deal ends August 1st. Buy Now at eBay

The Netgear CM1000 is one of the earliest DOCSIS 3.1 modems, and owning it avoids monthly cable modem rental fees. With promo code "VIPJULYTAKE8", this open-box model is just $37. It's a new modem, but comes with a damaged box. You'd pay $199 for a new one today at Amazon, so it's a great deal. It's certified for use with Xfinity, Spectrum, and Cox, and includes a 1-year Allstate warranty. Coupon ends August 1. Buy Now at eBay
- DOCSIS 3.1 cable modem with max speeds up to 1.0 Gbps
- Compatible with Xfinity by Comcast, Spectrum, and Cox
- Open-box condition, functions and looks like new
- Includes 1-year Allstate Protection Plans warranty

Amazon offers the Netgear Nighthawk DOCSIS 3.1 Cable Modem for $180.49. That's an all-time low at Amazon and the best we found now by $40. Shipping is free. Buy Now at Amazon
- DOCSIS 3.1 mid/high-split cable modem
- Up to 2Gbps download / 1Gbps upload
- Two Gigabit Ethernet ports (link aggregation capable)
- Compatible with Xfinity, Spectrum, Cox, and other major US providers
- Not compatible with Xfinity Voice plans
- US use only

Replaces a lost or failed power adapter for Toshiba PCX2200, PCX2500, and PCX2600 cable modems, which can otherwise be difficult to source through official channels at a reasonable price. Buy Now at Newegg
- Universal 100-240VAC voltage support
- 6.5ft extended reach power cord
- Integrated over-current and over-voltage safety protection
- FCC, CE, and RoHS certified quality
- Guaranteed compatibility with listed device models

A straightforward pick for anyone whose RCA DCM 315 cable modem adapter has failed or gone missing, since replacement power adapters for older modems can be surprisingly difficult to track down. Buy Now at Newegg
- Universal 100-240VAC input voltage
- Integrated over-current and over-voltage safety protection
- Includes 6.5-foot long power cord
- FCC, CE, and RoHS certified quality
- Compatible replacement for specified device model

The LGC220A converts copper (RJ45) 10GbE connections to SFP+ fiber, which is useful if you're extending network runs beyond copper's 100-meter limit or connecting devices with mismatched interfaces. At $479, that's about $82 off the $561 list price. Buy Now at Newegg
- Converts 10GBASE-T to 10GBASE-R network segments
- Supports 1G, 2.5G, 5G, and 10G Ethernet speeds
- Features RJ45 port and SFP slot connectivity
- Compliant with EN62368 safety standards
- Operates via 12V DC power supply