Pictures

The full PCB:

CPU - RealTek RTD1296

Samsung DDR4 RAM

Debug edge connector

J2 is a debug connector. Looking from the front the pinout is:

5 - ???	3 - ???	1 - 3.3V
6 - RX	4 - TX	2 - GND

The serial is 115200 8N1.

PCB and components

1: Realtek RTD1296 CPU.
2: 4x Samsung K4A4G165WE DDR4
- x16 bus
- 4Gb / chip
- 512MB / chip
- Total of 2GB RAM.
3: PIC board management CPU
4: Debug connector
5: Boot SPI flash
- MIXC mx25l6433f