IMB203 LGA775 ATX Motherboard User's Manual
2.4.10 Digital I/O Port (DIO) Connector (CN26)
The board is equipped an 8-channel digital I/O connector CN26 that
meets requirements for a system customary automation control. The
digital I/O can be configured to control cash drawers, sense warning
signals from an Uninterrupted Power System (UPS), or perform store
security control. The digital I/O is controlled via software programming.
Pin
Signal
DO1
1
DO2
3
DO3
5
DO4
7
GND
9
2.4.11 CPU Fan Connector (CN31)
A CPU fan is always needed for cooling CPU heat. The CPU fan
connector provides power to the CPU fan.
Pin
1 Ground
2 +12V
3
Rotation Detection
4 Speed Control
2.4.12 SATA Connectors (CN36, CN37, CN41, CN42,
CN46, CN47)
These SATA connectors are for high-speed SATA interface ports and
they can be connected to hard disk devices.
Pin
1
GND
2
SATA_TX+
3
SATA_TX-
Jumpers and Connectors
Pin
Signal
DI1
2
DI2
4
DI3
6
DI4
8
GND
10
Signal
Signal
CN36/41/46
17
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