Motorola SURFboard SB6121

Overview
"586121 MAIN BOARD", "569204-001 REV: 4", and "APR-27-2010" is silkscreened on the board in the image linked below.

DOCSIS 3.0 4x4

Image + details
Board shot on usbjtag.com
 * A date code of 1029, "MADE IN CHINA", "SBG6121 MAIN BOARD", "569204-001 REV: 4", and "APR-27-2010" is silkscreened on the board shown.
 * "P/N: 569206-001-00" is (among other things) printed on the label affixed to the tuner shield.

Specification

 * SoC: TNETC4830ZDWG (used by the 8x4-specced SB6141)
 * RAM: W9725G6JB-3 256Mb DDR2
 * Flash: Macronix MX25L6445EMI-10G 8 MB
 * Switch: GbE PHY appears to be a Marvell 88E1119R-NNW2


 * TNETC4830 = Puma5 (note the "PM5" next to TI logo)
 * PM5 details are available here

Links of Interest

 * Docsis 3.0 Hack - Forceware V.1.1 R12 Firmware + Download on Cable-Wizardz.co.uk
 * The SB6121 is noted as using a MT2170 tuner + a MT1570 amplifier.

Likely compatible services

 * (Comcast device database entry)
 * (Time Warner device information & manuals)