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Chapter 5: Advanced Motherboard Setup
Serial Ports
The COM1 serial port is located under the parallel port (see Figure
S e ria l P o rt P in D e finitio n s
(C O M 1 , C O M 2 )
Pin Number | Definition | Pin Number | Definition |
1 | DCD | 6 | CTS |
2 | DSR | 7 | DTR |
3 | Serial In | 8 | RI |
4 | RTS | 9 | G round |
5 | Serial O ut | 10 | NC |
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PS/2 Keyboard and Mouse Ports
The ATX PS/2 keyboard and the PS/2 mouse are located on J11. See the table on the right for pin definitions. (The mouse port is above the keyboard port. See Fig- ure
P S /2 K e yb o a rd a nd M o us e P o rt P in D e finitio ns (J 1 1 )
P in
N umber D efinition
1D ata
2N C
3G round
4V C C
5C lock
6N C
Fan Headers*
The motherboard has CPU, chas- sis and overheat fan headers des- ignated CPU, CHS and OH FAN, re- spectively. See the table on the right for pin definitions.
F a n H e a d e r P in D e finitio n s
(C P U /C H S /O H F a ns )
P in |
|
N umber | D efinition |
1G round (black)
2+12V (red)
3Tachometer
Caution: These fan headers are DC power.
LAN1/LAN2 Ethernet Ports
Two Ethernet ports are located beside the VGA port on the IO backplane. These ports accept RJ45 type cables. See the next section for a description of the LEDs on the LAN ports. Both are 100 Mb Ethernet ports.