Just so everyone is on the same page, here’s an annotated picture showing the J3 pinout/numbering:
Additionally, here’s a picture showing the right-angle SMT header that WD uses on this board when this board is used on the RX4100 and Arkeia Network Backup device:
A picture of the cable connecting the board to the rear panel DB15:
And cable routing:
And the VGA connector on the back panel:
Here’s a rough schematic of the RGB circuitry on the PCBA:
Depending on the exact board revision you have, the ESD protection circuitry may not actually be present. It tends to be there on -001 boards, but not so much on -003 boards.
