Epson 8100i - Manual (Page 105)

Technical Specifications 99
Computer Video Port Pin Assignments
The Computer 1 analog port (the VGA port on the right side of the
projector) and the Monitor Out port are female video RGB, 15-pin
micro-D-style connectors. Here are their pin assignments:
Pin no. Computer 1 port Monitor Out port
1 Red video Red out / red video
2 Green video Green out / green video
3 Blue video Blue out / blue video
4 Monitor (ID bit 2) Reserved
5 GND GND
6 Red video GND GND
7 Green video GND GND
8 Blue video GND GND
9 +5 V Reserved
10 Synchronous GND GND
11 Monitor (ID bit 0) Reserved
12 SDA Reserved
13 Horizontal sync Horizontal sync
14 Vertical sync Vertical sync
15 Reserved Vertical sync