System Board
1-7
1.4.3
Onboard Connectors
Table 1-4 lists the onboard connectors.
Table 1-4
Onboard Connectors
Connector
Function
CN1
COM1 connector
CN2
COM2 connector
CN3
AT keyboard connector (optional)
CN4
PS/2 keyboard port
CN5
PS/2 mouse port
CN6
Resume power connector
CN7
Main power connector
CN8
Printer/parallel connector
CN9
Floppy disk drive connector
CN10
IDE channel 2 connector
CN11
IDE channel 1 connector
CN12
Connector for clearing CMOS
CN13
WOL (wake-on LAN) connector
CN15
IrDA (InfraRed) connector
CN16
Modem ring-in connector
CN17
USB (Universal Serial Bus) connector
CN18
Power button connector
CN19
Multifunction connector
CN20
HDD LED connector
CN21
CPU fan connector
CN22
CPU fan and H/W monitoring connector