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Chapter 3: Motherboard Connections
LAN Ports
Two Gigabit Ethernet ports (LAN1/2) are located on the back I/O panel. In addition, a
dedicated IPMI LAN is located above USB0/1. All of these ports accept RJ45 cables. Please
refer to the LED Indicator section for LAN LED information.
LAN Ports
Pin Definition
Pin#
Definition
Pin#
Definition
1
TD0-
11
P3V3_Dual
2
TD0+
12
Act LED (Yellow)
3
TD1-
13
Link 1000 LED
(Amber)
4
TD1+
14
Link 100 LED
(Green)
5
TD2-
15
GND
6
TD2+
16
GND
7
TD3-
17
GND
8
TD3+
18
GND
9
COMMCT
10
GND
IPMI LAN
Pin Definition
Pin#
Definition
Pin#
Definition
9
19
GND
10
TD0+
20
Act LED
(Yellow)
11
TD0-
21
Link 100 LED
(Green)
12
TD1+
22
Link 1000 LED
(Amber)
13
TD1-
23
SGND
14
TD2+
24
SGND
15
TD2-
25
SGND
16
TD3+
26
SGND
17
TD3-
18
GND
Unit Identifier Switch/UID LED Indicator
A Unit Identifier (UID) switch and an LED indicator are located on the motherboard. The UID
switch is located at JUIDB1, which is next to the VGA port on the back panel. The UID LED
(LED4) is located next to the UID switch. When you press the switch, the LED will be turned
on, which provides easy identification of a system unit that may be in need of service. Press
the switch again to turn off the LED indicator.
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:
supermicro.com/support/manuals/
UID Switch
Pin Definitions
Pin#
Definition
1
GND
2
GND
3
Button In
4
Button In
UID LED
Pin Definitions
Color
Status
Blue: On
Unit Identified
