ASROCK SBC-251M-WT Settings Manual

SBC-251M-WT
®
The terms HDMI and HDMI High-Definition
Multimedia Interface, and the HDMI logo are
trademarks or registered trademarks of HDMI
Licensing LLC in the United States and other
countries.
Revision History
Date Description
April 9, 2024 First Release
May 7, 2024 Second Release
June 20, 2024 Third Release
1 : 2W Audio AMP Output Wafer (SPEAKER1)
Pin Signal Name
1 SPK L-
2 SPK L+
3 SPK R+
4 SPK R-
2 : Front Panel Audio Header (HD_AUDIO1)
Pin Signal Name Signal Name Pin
1 MIC1_L GND 2
3 MIC1_R 4
5 OUT2_R MIC1_RET 6
7 J_SENSE 8
9 OUT2_L OUT_RET 10
3 : Buzzer Header (BUZZ1)
Pin Signal Name
1 BUZZ+
2 BUZZ-
4 : SIO_AT1_DACC1
1-2 Short : AT Mode
1-2 Open : ATX Mode (Default)
3-4 Short : ACC (Default)
3-4 Open : No ACC
• Auto clear CMOS when system boot improperly.
5 : Clear CMOS Header (CLRMOS1)
1-2 : Clear CMOS
2-3 : Auto Clear (PWR OFF)
6 : Chassis Intrusion Header (CI1)
Open : Normal (Default)
Short : Active Case Open
7 : SATA3 Connector (SATA3_1)
Pin Signal Name
1 GND
2 SATA-A+
3 SATA-A-
4 GND
5 SATA-B-
6 SATA-B+
7 GND
Jumpers and Headers Setting Guide
Top:
1 2 3
1
S IO _AT1_DACC1
1
HD_AUDIO1
SPEAKER1
USB 3.2 Gen2
32
Top: USB3_2
Bottom: USB3_1
31
LAN1
30
LAN2
1
29
BAT1
BIOS
ROM
Bottom: Top:
28
1
HDMI1 DP1
27
DC_IN1
PNL_PWR1 BKT_PWR1
1 1
26
25
BLT_VOL1 BLT_PWR1
1 1
24 23
8 : SATA Power Output Connector
(SATA_PWR1)
1
Pin
1
4
2
3
4
9 : Digital Input/Output Pin Header (JGPIO1)
1 2
Pin Signal Name
1 GP_D09
3 GP_D10
5 GP_D11
9 10
7 GP_D12
9 +3V
10 : CAN Connector (CAN1_2)
2 1 Pin Signal Name
1 +3VSB
3 CAN1_TX0
5 CAN1_RX0
7 GND
9 GPIO
4 1
11 : CPU FAN Connector (+12V) (CPU_FAN1)
Pin
1
2
3
4 FAN_SPEED_CONTROL
12 : COM Port Headers
3 1
COM3 (RS232/422/485)*
COM1, 2, 4 (RS232)
Pin Signal Name
1 DDCD#1
3 TTXD1
2 1
5 GND
7 RRTS#1
COM1, 2: NA
9
COM4: PWR
* This motherboard supports RS232/422/485 on COM3 port. Please refer to the
table below for the pin definition. In addition, COM3 port (RS232/422/485) can
be adjusted in BIOS setup utility > Advanced Screen > Super IO Configuration.
7 1
You may refer to our user manual for details.
COM3 Port Pin Definition
Pin RS232
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 PWR
4 5 6 7 8
SAT A3 _1 SATA_PWR1
1
1
1
BUZZ1 1 CLRMOS1 1 CI1 1
DDR4_A1 (Support DDR4 Only)
DDR4_B1 (Support DDR4 Only)
1
R
Industrial
1
SBC-251 -WT M
1
1
1 1 1
PWR_COM3 1
PWR_COM4
1
SIM1
1
1
M2_B1
1
1
1 1
M2_E1 M2_M1
BLT_PWM2 BLT_PWM1 JGPIO_SET1
1 1 1
PLED PWRBTN
HDLED RESET
1
1 PANEL1
LVDS1
22 21
Signal Name
+5V
GND
4
GND
+12V
Signal Name Pin
10 9
GP_D00 2
GP_D01 4
GP_D02 6
GP_D03 8
1
2
GND 10
Signal Name Pin
9 10
+3VSB 2
CAN2_TX0 4
CAN2_RX0 6
GND 8
1 2
10
Signal Name
4
GND
+12V
CPU_FAN_SPEED
1
Signal Name Pin
1 2
RRXD1 2
DDTR#1 4
DDSR#1 6
CCTS#1 8
9 10
10
RS422 RS485
TX- RTX-
TX+ RTX+
RX+ N/A
RX- N/A
GND GND
N/A N/A
N/A N/A
N/A N/A
PWR PWR
Bottom:
9
10
11
33
12
1
ESPI1
13
14
15
16
17
18
19
20
13 : COM Port Pin9 PWR Setting Jumpers
PWR_COM3 (For COM Port3)
PWR_COM4 (For COM Port4)
1-2 : +5V (Default)
2-3 : +12V
1
14 : USB 2.0 Connectors
(USB2_3_4, USB2_5_6)
Pin Signal Name Signal Name
1 USB_PWR USB_PWR
3 P-
5 P+
7 GND
9
15 : M.2 Key-B Socket (M2_B1)
Pin Signal Name Signal Name
1 NA
3 GND
5 GND FuLL_Card_Power_off
7 USB_D+ W_DISABLE
9 USB_D-
11 GND
21 GND
23 NA
25 NA
27 GND
29 USB3_RX- UIM_RESET
31 USB3_RX+
33 GND
35 USB3_TX-
37 USB3_TX+
39 GND
41 PERn0
43 PERp0
45 GND
47 PETn0
49 PETP0
51 GND
53 PEFCLKn
55 PEFCLKp
57 GND
59 NA
61 NA
63 NA
65 NA
67 NA
69 NA
71 GND
73 GND
75 NA
16 : M.2 Key-E Socket (M2_E1)
Pin Signal Name Signal Name
1 GND
3 USB_D+
5 USB_D-
7 GND
9 NA
11 NA
13 NA
15 NA
17 NA
19 NA
21 NA
23 NA
33 GND
35 PETp
37 PETn
39 GND
41 PERp
43 PERn
45 GND
47 PEFCLKp
49 PEFCLKn
51 GND
53 CLKREQ# W_DISABLE1#
55 NA W_DISABLE2#
57 GND
59 NA
61 NA
63 GND
65 NA
67 NA
69 GND
71 NA
73 NA
75 GND
3 1
Pin
10 9
2
P- 4
P+ 6
GND 8
2 1
DUMMY 10
PIn
+3.3V 2
+3.3V 4
6
8
NA 10
NA 20
NA 22
NA 24
NA 26
NA 28
30
UIM_CLK 32
UIM_DATA 34
UIM_PWR 36
NA 38
NA 40
NA 42
NA 44
NA 46
NA 48
PERST# 50
CLKREQ# 52
NA 54
NA 56
NA 58
NA 60
NA 62
NA 64
NA 66
NA 68
+3.3V 70
+3.3V 72
+3.3V 74
PIn
+3.3V 2
+3.3V 4
NA 6
NA 8
NA 10
NA 12
NA 14
NA 16
GND 18
NA 20
NA 22
24
26
NA 32
NA 34
NA 36
NA 38
NA 40
NA 42
NA 44
NA 46
NA 48
NA 50
PERST0# 52
54
56
NA 58
NA 60
NA 62
NA 64
NA 66
NA 68
NA 70
+3.3V 72
+3.3V 74