Chapter 5: Advanced Motherboard Setup
Serial Ports
The COM1 serial port is located under the parallel port. See the table on the right for pin defini- tions. The COM2 connector is a header located near the BIOS chip on the motherboard.
ATX PS/2 Keyboard and PS/2 Mouse Ports
The ATX PS/2 keyboard and the PS/2 mouse are located on J29. See the table on the right for pin definitions. (The mouse port is above the keyboard port. See Fig- ure
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.
PS/2 Keyboard
and Mouse Port
Pin Definitions
(J29)
Pin
Number Definition
1Data
2NC
3Ground
4VCC
5Clock
6NC
Fan Headers
The motherboard has three fan headers. These are designated CPU 1 Chassis Fan, CPU 2 Chas- sis Fan and Chassis Fan 3. See the table on the right for pin defini- tions.
Fan Header Pin Definitions
Pin |
|
Number | Definition |
1Ground (black)
2+12V (red)
3Tachometer
Caution: These fan headers are DC power.
LAN1/2 (Ethernet Ports)
Two Ethernet ports (designated LAN1 and LAN2) are located be- side the VGA port on the IO backplane. These ports accept RJ45 type cables.