Computer Hardware User Manual

2-28
X8STi/X8STi-F/X8STi-3F/X8STi-LN4 User's Manual
LSI 1068E
NIC4 LED
JBMC1
A. PWR Supply Failure
B. UID
A
B
Power Supply Failure
Connect a cable from your power supply to
the Power Supply Failure header at JPWF
to provide a warning of power supply failure.
This warning signal is passed through the
PWR_LED pin to indicate of a power failure
on the chassis. See the table on the right for
pin defi nitions.
Note: This feature is only available when using
Supermicro redundant power supplies.
PWR Supply Fail LED
Pin Defi nitions
Pin# Defi nition
1 PWR 1: Fail
2 PWR 2: Fail
3 PWR 3: Fail
4 Signal: Alarm Reset
Unit Identifi er Switches
There are two Unit Identifi er (UID) Switches
on the motherboard. The Front Panel UID
Switch is connected to a pin in the Front
Control Panel (JF1). The Rear UID Switch
(SW1) is located next to Fan6. When you
push the UID Switch on the Front Control
Panel, both Rear UID and Front Panel UID
Indicators will be turned on. Push the FP UID
Switch or the Rear UID Switch-SW1 again to
turn off both Indicators. These UID Indicators
provide easy identifi cation of a system unit
that may be in need of service.
UID Switch
Pin# Defi nition
1 Ground
2 Ground
3 Button In
4 Ground