Motorola MB7621


 * Motorola 24x8 Cable Modem, Model MB7621, DOCSIS 3.0
 * • Datasheet

Approved by Comcast Xfinity, Cox, Charter Spectrum, Time Warner Cable.

24x8 DOCSIS 3.0 cable modem
 * 24 downstream channels for speeds up to 1,000 Mbps
 * 8 upstream channels for speeds up to 246 Mbps

The product page says, "Advanced design with Broadcom integrated circuit technology."