Technical information

Chapter 5 59
CHS1: Chassis Intrusion Detect Header
SATA1~4: Serial ATA Connectors
These connectors are used to support the new Serial ATA devices for the higher date transfer
rates (3.0 Gb/s), simpler disk drive cabling and easier PC assembly. It eliminates limitations of the
current Parallel ATA interface but still maintains the register compatibility and software
compatibility with Parallel ATA.
SPDIFO2: SPDIF out Header (Optional)
This is an optional header that provides an SPDIFO (Sony / Philips Digital Interface) output to
digital multimedia device through optional fiber or coaxial connector.
1394A1: IEEE 1394a Header (optional)
This header supports any device with IEEE 1394a interface.
IR1: Infrared Header
The main board supports an infrared (IR1) data port. Infrared port allows the wireless exchange
of information between the computer and similarly equipped devices such as printers, laptops,
PDAs, and other computers.
Pin 1-2 Function
Short Case opened
Open Case closed
Pin Signal Name Pin Signal Name
1 Ground 2 TX+
3TX- 4Ground
5RX- 6RX+
7 Ground - -
Pin Signal Name Function
1 +5VA 5V analog power
2KEY No pin
3 SPDIF SPDIF digital output
4 GND Ground
Pin Signal Name Pin Signal Name
1TPA1P 2TPA1M
3 GND 4 GND
5 TPB1B 6 TPB1M
7CPWR2 8CPWR2
9 Key 10 GND