Supermicro X13SEW-TF User Manual page 39

Unit Identifier Switch (UID-SW): One button with two functions
A Unit Identifier (UID) switch and two LED Indicators are located on the motherboard. The UID
switch is located next to the VGA port on the back panel.
Function
Push Once
UID LED Indicator
Push Again
Push and hold for 6 seconds
BMC Reset
Push and hold for 12 seconds BMC will reset to factory default
Note: After pushing and holding the UID Switch for 12 seconds, all BMC settings includ-
ing username and password will revert back to the factory default. Only the network
settings and FRU are retained.
UID Switch
Pin Definitions
Pin# Definition
1 Button In
2 Ground
G1 Ground
G2 Ground
1 2
JUIDB1
VGA
MH1
LAN2
BMC
JPFR2
BT1
MH4
M.2 NVME
JBT1
M.2-P
CMOS CLEAR
MAC CODE
MH15
SAN MAC
MH6
BIOS LICENSE
MH9
MH10
FAN3
FAN6 FAN5 FAN4
User Input
Turns on the UID LED
Turns off the UID LED
BMC will do a cold boot
COM1
MH2
USB3/4
(3.2 Gen 1)
LAN1
IPMI_LAN
USB0/1
JNCSI1
JTPM
X550
MH17
USB2
PCH
C741
JRK1
JVRM1
CPU
JPI2C
MH8
FAN2 FAN1
MH7
Behavior
UID LED turns solid blue
UID LED turns off
BMC Hearbeat LED turns solid green
BMC Hearbeat LED turns solid green
UID LED
Pin Definitions
Color
Blue: On
1. UID Switch
2. UID LED
39
Chapter 2: Installation
LED Activity
Status
Unit Identified