Nvidia 400 - Manual (Page 26)

Installation
Page 3-10
GAME1: Game/MIDI connector
This port works well with any application that is
compatible with the standard PC joystick.
COM2: Serial Port Connector
The serial port can be used with modems, serial
printers, remote display terminals, and other serial
device.
1 9
2 10
NC CTS
Ground TXD
RI RTS
RXD DTR
DCD
DSR
SPDIF: Sony/Philips Digital InterFace connector
This connector links digital audio between the
mainboard and your audio devices, such as CD
player, sampler or DAT recorder. It allows the
digital transmission of audio data in S/PDIF format.
1 5
2 6
VCC
NC
GND
SPDIF_IN
SPDIF_OUT
16 2
15 1
J1B1
J1CX
+5V +5V
+5V J2CX
J2B1
MIDI_Out
J2B2
GND
J1CY
MIDI_In
J2CY
J1B2