ASROCK IMB-1242 Settings Manual

IMB-1242
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Revision History
Date Description
September 13, 2023 First Release
December 8, 2023 Second Release
1 : COM Port Pin9 PWR Setting Jumpers
PWR_COM1 (For COM Port1)
PWR_COM2 (For COM Port2)
1-2 : +5V (Default)
2-3 : +12V
2 : ESPI Header (ESPI1)
Pin Signal Name
1 GND
2 ESPI_CLK
3 GND
4 ESPI_CS#
5 ESPI_RESET#
6 GND
7 +3V
8 ESPI_CS#1
9 PLTRST#
10 COM_RST#
11 ESPI_IO0
12 ESPI_IO1
13 ESPI_IO2
14 ESPI_IO3
15 ALERT#1
16 +3VSB
17 Internal Use
18 +5VSB
19 ESPI_ALERT#
20 GND

3 : USB 3.2 Gen1 Header (USB3_3_4)

Pin Signal Name Signal Name Pin
1 DUMMY IntA_PA_D+ 2
3 IntA_PB_D+ IntA_PA_D- 4
5 IntA_PB_D- GND 6
7 GND IntA_PA_SSTX+ 8
9 DUMMY IntA_PA_SSTX- 10
11 DUMMY GND 12
13 GND IntA_PA_SSRX+ 14
15 DUMMY IntA_PA_SSRX- 16
17 DUMMY Vbus 18
19 Vbus 20
4 : 24-pin ATX Power Input Connector
(ATXPWR1)
Pin Signal Name Signal Name Pin
1 +3V +3V 13
2 +3V -12V 14
3 GND GND 15
4 +5V PSON# 16
5 GND GND 17
6 +5V GND 18
7 GND GND 19
8 PWROK_PS NA 20
9 ATX+5VSB +5V 21
10 +12V +5V 22
11 +12V +5V 23
12 +3V GND 24

Jumpers and Headers Setting Guide

PWR_COM2
32
COM2 COM1
31
1
30
VGA1
1
SATA_PWR1
29
USB 3.2 Gen2
28
Top: USB3_2
Bottom: USB3_1
USB 2.0
27
Top: USB2_8
Bottom: USB2_7
26
HDMI1 DP1
25
Mic-In Line-Out
SPDIF1
24
5 : DACC1_PCIE_PWR1
Pin
1 Open: No ACC (Default)
2
3
3
4
1
* Auto clear CMOS when system boot improperly.

6 : TPM Header (TPM1)

Pin Signal Name
1 TPM PWR
3
1 20
5 IRA
7 MISO
9 CLK

7 : USB 2.0 Header (USB2_5_6)

Pin Signal Name
1 USB_PWR
3 P-
5 P+
7 GND
9
8 : SMBUS_TEST1
Pin
1
2
3
4
2 20

9 : Digital Input/Output Pin Header (JGPIO1)

Pin Signal Name
1 19
1 SIO_GP71
3 SIO_GP72
5 SIO_GP73
7 SIO_GP74
9 JGPIOPWR_R
10 : Digital Input/Output Power Select
(JGPIO_PWR1)
1-2: +12V (Default)
2-3: +5V
1 12
11 : Digital Input/Output Default Value
13 24
Setting (JGPIO_SET1)
1-2: Pull-High (Default)
2-3: Pull-Low
12 : Chassis Intrusion Header (CI1_2)
Pin
1-2
Short: Active Case Open
Open: Active Case Open
3-4
1 2 3
PWR_COM1
1
1 1 1
ESPI1
1
USB3_3_4
1
1
M2_M1
1
M2 E1 _
LAN2
LAN1
BUZZ1
DC_4PIN1
1
HD_AUDIO1
1
1
PCIE1
23 22 21 20
Signal Name
1 4
Short: ACC*
PSON#
GND
9
Signal Name Pin
RST# 2
CS# 4
10
MOSI 6
GND 8
GND 10
Signal Name Pin
1 2
USB_PWR 2
P- 4
P+ 6
GND 8
DUMMY 10
9 10
Signal Name
1
GPP_E7
SMB_CLK_MAIN
4
SMB_DATA_MAIN
GND
Signal Name Pin
1 2
GPP_H23 2
GPP_I10 4
GPP_E5 6
GPP_E6 8
GND 10
9 10
1
3
1
3
Signal Name
1
Open: Normal
4
Short: Normal
4 5
1 DACC1_PCIE_PWR1
1
TPM1
ATXPWR1
1
1
USB2_ _
5 6
BIOS
ROM
_
DDR4 B1
_
DDR4 A1 1
SMBUS_TEST1
R 1
IMB-1242
Industrial
JGPIO1
1
CI1_2
PANEL1
1
BAT1
PWR_BAT1_SIO_AT1
CHA_FAN1
1
CPU_FAN1
1
1
HEATER1
1
CLRMOS1

13 : System Panel Header (PANEL1)

Pin Signal Name Signal Name Pin
1 HDLED+
3 HDLED-
5 GND PWRBTN#
7 RESET#
9 GND
14 : Battery Connector (BAT1)
Pin Signal Name
1
1 BAT+
2 GND
2
15 : PWR_BAT1_SIO_AT1
Pin Signal Name
1 PWR_BAT1:
Open: Normal (Default)
2 Short: Charge Battery*
3 SIO_AT1:
Open: ATX Mode (Default)
4 Short: AT Mode
* Only supported by chargeable battery.
16 : Chassis FAN Connector (+12V)
(CHA_FAN1)
Pin Signal Name
1 GND
2 +12V
3 CHA_FAN_SPEED
4 FAN_SPEED_CONTROL

17 : CPU FAN Connector (+12V) (CPU_FAN1)

Pin Signal Name
1 GND
2 +12V
3 CPU_FAN_SPEED
4 FAN_SPEED_CONTROL
18 : HEATER Header (HEATER1)
Pin Signal Name
1 Heater PWR
2 GND
3 NCT

19 : Clear CMOS Header (CLRMOS1)

1-2: Normal (Default)
2-3: Clear CMOS
20 : 4-pin ATX PWR Connector
(DC_4PIN1)
Pin Signal Name
1 GND
2 GND
3 DC Input (12V only)
4 DC Input (12V only)
6
7
8
9
1
10
11
1
12
1
13
14
1
15
16
17
18
19
1 2
PLED+ 2
PLED- 4
6
GND 8
10
9 10
1
2
1
4
4
1
4
1
1 3
1 3
2 4
1 3