CHAINTECH 7AIA5, Manual

Page: 18 / 53

15
Hardware Setup
Optional S/PDIF-Out Connector (J1)
The S/PDIF-Out connector supports the digital
audio. This connector must be connected to the
cable from an external device. (Ex. 2-channel
decoded AC-3 from DVD decoders)
Infrared Connector (J2)
If you enable the UART 2 Mode in BIOS’s
Integrated Peripherals menu the COM2 port
will support IR functions. (See section 3-4)
Chassis Intrusion Detection (J3)
This board supports the chassis instruction
monitoring feature of the management extension
hardware by means of a mechanical or photo sensor
switch attached to the motherboard through this
1x3-pin chassis security header. The mechanical
switch is set to open for normal computer operation.
Vcc
Vcc
Ir-Rx
GND
Ir-Tx