Chapter 5: Advanced Motherboard Setup
IDE LED
The IDE LED is located on pins 13 and 14 of JF1. This LED is used to display all IDE and SATA activity. See the table on the right for pin defi- nitions.
Power On LED
The Power On LED connector is lo- cated on pins 15 and 16 of JF1 (use J17 for a
Hard Drive Activity
LED Pin Definitions
(JF1)
Pin
Number Definition
13+5V
14HD Activity
PWR_LED Pin Definitions
(JF1)
Pin |
|
Number | Definition |
15 | +5V |
16 | Ground |
J17
Pin Definitions
Pin
Number Definition
1+5V
2Key
3Ground
Serial Ports
Two serial ports are included on the motherboard: COM1 (J9) is a port lo- cated beside the mouse/keyboard ports and COM2 (J10) is a header located on the motherboard near the J20 power connector. See the table on the right for pin definitions.
Fan Headers
There are six fan headers on the P4SC8, which are designated FAN1, FAN2, FAN3, FAN4, CPU FAN and OH (Overheat) FAN. Note that FAN 3 and FAN 4 are not monitored by BIOS. Connect the fan on your CPU heatsink to the CPU FAN header. See the table on the right for pin definitions.
Serial Port Pin Definitions
(COM1, COM2)
Pin Number | Definition | Pin Number | Definition |
1 | CD | 6 | DSR |
2 | RD | 7 | RTS |
3 | TD | 8 | CTS |
4 | DTR | 9 | RI |
5 | Ground | 10 | NC |
Note: Pin 10 is included on the header but not on
the port. NC indicates no connection.
Fan Header Pin Definitions
(FAN1, 2, 3, 4, CPU and Overheat)
Pin | Definition |
Number |
1Ground (black)
2+12V (red)
3Tachometer
Caution: These fan headers are DC power.
