Supermicro H13SRA-F User Manual page 43

UID (Unit Identifier)/BMC Reset Switch and UID/BMC Reset LED Indicators
A UID / BMC Reset switch (JUIDB1) is located on the rear side of the motherboard. This
switch has dual functions. It can be used to identify a system unit that is in need of service,
and it can also be used to reset the BMC settings.
When functioning as a BMC reset switch, JUIDB1 will trigger a cold reboot when you press
and hold the switch for six seconds. It will also restore the BMC to the manufacturer's default
when you press and hold the switch for 12 seconds.
When functioning as a UID LED switch, JUIDB1 will turn both rear UID LED (LED1) and front
UID LED (Pin 7/Pin 8 of JF1) on and off when you press the switch on/off.
To achieve these dual purposes, the UID LED/BMC Reset switch works in conjunction with
the BMC Heartbeat LED (LEDBMC) and front/rear UID LEDs. Please note that UID can
also be triggered via BMC on the motherboard. For more details on the UID LEDs and BMC
LEDs, refer to the tables on the next page. Also, refer to the BMC User's Guide posted on
our website at https://www.supermicro.com
2
4
LAN
BMC LEDBMC
CTRL
JL1
JSTBY1
JPL1
LED3601
(M.2-C1 LED)
M.2-C1
PCIe 4.0 X4
FANC
BT1
FANB
JBT1
2280
USB0/1
22110
(2.0)
TRX50
JD1
H13SRA-TF
REV:1.01
SP1 DESIGNED IN USA
USB8
BIOS
(3.2 GEN2)
LICENSE
JSD1
12V_PUMP_PWR2
SATA2 SATA0
SATA3 SATA1
USB2/3
FANA
JMCIO-1/2
(3.2 GEN1)
JWD1
JOH1
1
LED1
(UID-LED)
JUIDB1
(UID)
USB9
(3.2 GEN2X2)
VGA
BMC_LAN
COM1
LAN2 LAN1
USB6/7 USB4/5
(3.2 GEN2) (3.2 GEN2)
JPW3
JPUSB1
FAN4
LED3602
(M.2-C2 LED)
CPU
M.2-C2
PCIe 4.0 X4
2280
22110
JTPM1
LED7
(Power LED)
JF1
for more information on BMC.
JF1 Header Pins
1 2
Power Button
Reset Button
3.3V
3
Red+
(Blue LED_Cathode_UID)
P3V3_STBY
P3V3_STBY
ID_UID/3.3V Stby
3.3V
Key
NMI
19 20
JAUDIO1
JSPDIF_OUT
JPAC1
JAFP1
1. UID Switch / BMC Reset (JUIDB1)
2. Rear UID LED (LED1)
FAN3
3. Front UID LED
FAN2
FAN1
4. BMC Heartbeat LED (LEDBMC)
12V_PUMP_PWR1
JPW2
JPI2C1
JPW1
(Continued to next page)
43
Chapter 2: Installation
Ground
Ground
Power Fail (for LED6)
Blue+
(Red OH/Fan Fail/PWR Fail for LED5/Blue UID LED)
NIC2 Active LED
NIC1 Active LED
HDD LED
FP PWR LED
Key
Ground
1