Arris SB6181 Surfboard Cable Modem
Open Box. Tested Good.
If you rent a Cable modem for $10 / month from your Internet Service Provider then this is a no-brainer.
686Mbps 16x4 Modem Channels.
One 1-Gigabit Ethernet Port
Compatible with Xfinity, COX, and Spectrum
Complete with Power adapter, Cable, and Instructions.