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SUPERSERVER 2028R-TXR User's Manual
Ethernet Ports
Two Gigabit Ethernet ports (LAN1, LAN2) are located on the I/O backplane on the
motherboard. These ethernet ports support Gigabit LANs on the motherboard. In
addition, an IPMI_Dedicated LAN is located above USB 0/1 ports on the backplane.
All these ports accept RJ45 type cables. Please refer to the LED Indicator Section
for LAN LED information.
Unit Identifi er Switches & UID LED Indicators
A rear unit identifi er switch (JUIDB1) is located next
to the VGA port on the IO back panel, and a front
UID switch is located on pin 13 on the front control
panel (JF1). The rear UID LED (LED1) is located
next to the rear UID switch, and the front UID LED
is located on pins 7 on JF1. When you press the
front UID switch or the rear UID switch, both front
and rear UID LED indicators will be turned on. Press
the UID switch again to turn off the LEDs. The UID
Indicators provide easy identifi cation of a system
unit that may be in need of service. Refer to the
layout below for the locations of the front control
panel and the I/O back panel.
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 Button
Pin# Defi nition
1 Ground
2 Ground
3 Button In
4 Button In
UID LED
Status
Color/State Status
Blue: On Unit Identifi ed
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