Technicolor CGM4140COM

This device is also known as the XB6-T for Comcast Xfinity
 * 32x8 channel bonding - enables extreme cable Internet speeds
 * OFDM 2x2 - enables Gigabit Internet speeds
 * Compatible with Xfinity from

The SanDisk flash part number looks more like SDIN8DG4-16G but
 * I can't find any reference to that part.

DFS support was added in a Class II Product Change request on 11/28/2017.

Press releases

 * Comcast Taps Arris, Technicolor for XB6 Gateways on Multichannel News
 * Technicolor made model to use Broadcom chipset
 * Arris version powered by Intel Puma silicon