54
SuperStorage Server 6039P-E1CR16H/L User's Manual
Unit Identifier Switch/Rear LED Indicator
A Unit Identifier (UID) Switch (UID-SW) and a rear LED Indicator (UID-LED) are located on
the I/O back panel. When the user presses the UID switch, the UID LED indicator illuminates.
Press the UID switch again to turn off the UID LED. The UID indicator provides easy identi
-
fication of a system unit that might be in need of service.
Note:
UID can also be triggered via IPMI on the motherboard. For more information on IPMI,
please refer to the IPMI User's Guide posted on our website at
http://www.supermicro.com
.
UID LED
Status
Color/State Status
Blue:
On
Unit Iden-
tified
UID Switch
Pin Definitions
Pin#
Definitions
1
Ground
2
Ground
3
Button In
4
Button In
4.4 Jumpers
Explanation of Jumpers
To modify the operation of the motherboard, jumpers are used to choose between optional
settings. Jumpers create shorts between two pins to change the function associated with it. Pin
1 is identified with a square solder pad on the printed circuit board. Refer to the motherboard
layout diagram in Section 1.5 for jumper locations.
Note:
On a two-pin jumper, "Closed" means the jumper is on both pins and "Open" indicates
the jumper is either on only one pin or has been completely removed.
Connector
Pins
Jumper
Setting
3 2 1
3 2 1
