Motorola Cable Modem: SB6141 $50 or SBG6580 $80

Compatible with Windows®, Macintosh®, and UNIX® computers
DOCSIS 3.0 certified
Backwards compatible to DOCSIS 2.0
Capable of downloading at speeds up to 8 times faster than DOCSIS 2.0
DOCSIS 3.0 compatible, featuring:
Channel bonding of up to eight downstream channels and four upstream channels increasing data rates of over 300 Mbps for received data and over 100 Mbps when sending data
Supports IPv4 and IPv6 to expand network addressing capabilities
Enhanced security: supports AES traffic encryption
IP multicast support
GigE (RJ-45) data port with Auto Negotiate and Auto MDIX
User-friendly online diagnostics
Includes an internal filter to eliminate potential interference from MoCA signals' intermodulation beats
Online assistance for easy network set-up
Motorola support options via phone, chat, or e-mail