5-14
System Board Connectors and Functions
Table 5- 8 2137 System Board Connector Functions
Connector Function Connect to…
CN1 Lower: PS/2 keyboard connector
Upper: PS/2 mouse connector
Keyboard
Mouse
CN2 Modem/voice-in connector Modem card
CN3 Universal serial bus (USB) connectors USB devices
CN4 Upper: Printer port (25-pin female)
Lower: Serial port (9-pin male)
Video port (15-pin female)
Printer
Serial device
Monitor
CN5 Upper: MIDI/game port
Lower: Line-out, line-in, mic-in
connectors
Joystick
Speaker,
microphone
CN6 CD audio input connector CD-ROM drive
CN8 ATI media connector (AMC) Reserved
CN9 Modem ring-in wake-up connector Modem card
CN10 Secondary IDE channel CD-ROM drive
CN12 IDE LED connector
Connect the red wire to pin-1, white
wire to pin-2, then leave pin-3, -4 as
non-connected; or connect the red
wire to pin-4, white wire to pin-3, then
leave pin-1, -2 as non-connected.
Hard drive LED
CN13 Primary IDE channel Hard disk drive
CN14 Power/suspend switch connector
This connector has no directional
concern.
Power/suspend
switch
CN15 Standby power connector Power supply
CN16 Diskette connector Diskette drive
CN17 Power LED connector.
Connect the green wire to pin-12,
white wire to pin-14.
Power LED
CN19 Power connector Power supply
FN1 Processor fan connector CPU heat sink
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