Supermicro SUPERSERVER 5018D-MHR7N4P, User Manual, Page: 56 / 126

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Unit Identifier Switch
A Unit Identifier (UID) switch and two LED in -
dicators are located on the motherboard. The
UID switch is located next to the VGA port on
the back panel. The rear UID LED (LED7) is
located next to the UID switch. The Front Panel
UID LED is located at pin 7 of the Front Control
Panel at JF1. Connect a cable to pin 7 on JF1
for Front Panel UID LED indication. When you
press the UID switch, both the rear UID LED
and the Front Panel UID LED Indicators will be
turned on. Press the UID switch again to turn
off both LED Indicators. These UID Indicators
provide easy identification of a system unit that
may 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 Switch
Pin# Definition
1 Ground
2 Ground
3 Button In
4 Button In
UID LED
Status
Color/State Status
Blue: On Unit Identified
Fan Header
Pin Definitions
Pin# Definition
1 Ground (Black)
2 12V (Red)
3 Tachometer
4 PWM_Control
Fan Headers
This motherboard has six 4-pin fan headers.
Although pins 1-3 of the fan headers are
backward compatible with the traditional 3-pin
fans, we recommend you use 4-pin fans to take
advantage of the fan speed control via Pulse
Width Modulation through the BMC. This allows
the fan speeds to be automatically adjusted
based on the motherboard temperature.
Chassis Intrusion
Pin Definitions (JL1)
Pin# Definition
1 Ground
2 Intrusion Input
Chassis Intrusion
A Chassis Intrusion header is located at JL1 on
the motherboard. Attach the appropriate cable
from the header to the chassis to inform you
of an intrusion when the chassis is opened.