Abit AB-BE6 Manual page 21

Installing the Motherboard
PN1 (Pin 1-2-3-4-5): Power LED and Keylock Switch Headers
install them with the wrong direction, the power LED light will not illuminate correctly.
Note: Watch the power LED pin position and orientation.
PN1 (Pin 6-7): HDD LED Header
Note: Watch the HDD LED pin position and the orientation.
PN1 (Pin 8-9): Power on Switch Header
PN1 (Pin 10-11): Hardware Suspend Switch (SMI Switch) Header
Note: If you enable the ACPI function in the BIOS setup, this function will not work.
There is a specific orientation for pins 1
through 3. Insert the three-threaded power
LED cable to pins 1~3, and the two-threaded
keylock cable into pin 4 and pin 5. Check to
make sure the correct pins go to the correct
connectors on the motherboard. If you
Attach the cable from the case's front panel
HDD LED to this header. If you install it in
the wrong direction, the LED light will not
illuminate correctly.
Attach the cable from the case's front panel
power switch to this header.
Attach the cable from the case's front panel
suspend switch (if there is one) to this
header. Use this switch to enable/disable the
power management function by hardware.
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User's Manual