EnglishDeutsch
 logo
Brands
  1. Home
  2. •
  3. Brands
  4. •
  5. ASROCK
  6. •
  7. Motherboard
  8. •
  9. ASROCK IMB-391 Service manual

ASROCK IMB-391 Service manual

Other manuals for IMB-391

1

Other ASROCK Motherboard manuals

ASROCK H610M-ITX/eDP User manual

ASROCK

ASROCK H610M-ITX/eDP User manual

ASROCK SuperAlloy Z170 Pro4S User manual

ASROCK

ASROCK SuperAlloy Z170 Pro4S User manual

ASROCK X570 Steel Legend User manual

ASROCK

ASROCK X570 Steel Legend User manual

ASROCK SBC-310 User manual

ASROCK

ASROCK SBC-310 User manual

ASROCK B460M Pro4/ac User manual

ASROCK

ASROCK B460M Pro4/ac User manual

ASROCK X99M Extreme4 User manual

ASROCK

ASROCK X99M Extreme4 User manual

ASROCK H570 Steel Legend User manual

ASROCK

ASROCK H570 Steel Legend User manual

ASROCK 790GX Pro User manual

ASROCK

ASROCK 790GX Pro User manual

ASROCK H110M-GL/D3 User manual

ASROCK

ASROCK H110M-GL/D3 User manual

ASROCK 970 Pro2 User manual

ASROCK

ASROCK 970 Pro2 User manual

ASROCK IMB-150N User manual

ASROCK

ASROCK IMB-150N User manual

ASROCK 970 Pro User manual

ASROCK

ASROCK 970 Pro User manual

ASROCK 4Core1600-GLAN User manual

ASROCK

ASROCK 4Core1600-GLAN User manual

ASROCK EP2C602D16FM User manual

ASROCK

ASROCK EP2C602D16FM User manual

ASROCK B150M-DVS R2.0 User manual

ASROCK

ASROCK B150M-DVS R2.0 User manual

ASROCK Z790 PG SONIC User manual

ASROCK

ASROCK Z790 PG SONIC User manual

ASROCK Taichi Razer Edition X570 User manual

ASROCK

ASROCK Taichi Razer Edition X570 User manual

ASROCK K8S8X User manual

ASROCK

ASROCK K8S8X User manual

ASROCK IMB-791 Service manual

ASROCK

ASROCK IMB-791 Service manual

ASROCK Fatal1ty X99 Professional Series User manual

ASROCK

ASROCK Fatal1ty X99 Professional Series User manual

ASROCK P4VM900-SATA2 User manual

ASROCK

ASROCK P4VM900-SATA2 User manual

ASROCK J3160-ITX User manual

ASROCK

ASROCK J3160-ITX User manual

ASROCK ALIVENF7G-GLAN - V1.0 User manual

ASROCK

ASROCK ALIVENF7G-GLAN - V1.0 User manual

ASROCK 1U4LW Series User manual

ASROCK

ASROCK 1U4LW Series User manual

Popular Motherboard manuals by other brands

DFI SD170 user manual

DFI

DFI SD170 user manual

Asus P2L97A user manual

Asus

Asus P2L97A user manual

Winmate IC70 user manual

Winmate

Winmate IC70 user manual

Asus MES-B user manual

Asus

Asus MES-B user manual

Grantech SYS8F377VGGA-3OMN user manual

Grantech

Grantech SYS8F377VGGA-3OMN user manual

Telit Wireless Solutions SL869-3DR user guide

Telit Wireless Solutions

Telit Wireless Solutions SL869-3DR user guide

Texas Instruments ADS8372EVM user guide

Texas Instruments

Texas Instruments ADS8372EVM user guide

Commell MS-C73 user manual

Commell

Commell MS-C73 user manual

Gigabyte GA-9IVDT user manual

Gigabyte

Gigabyte GA-9IVDT user manual

IBT Technologies MB860 user manual

IBT Technologies

IBT Technologies MB860 user manual

Nvidia TEGRA DG-04927-001_V01 user guide

Nvidia

Nvidia TEGRA DG-04927-001_V01 user guide

Intel D33217CK specification

Intel

Intel D33217CK specification

Asus F1A55-M LX PLUS R2.0 user manual

Asus

Asus F1A55-M LX PLUS R2.0 user manual

EPC EPC9147C quick start guide

EPC

EPC EPC9147C quick start guide

Asus EX-B760M-V5 D4 quick start guide

Asus

Asus EX-B760M-V5 D4 quick start guide

EPOX MU-8KHA0010 user manual

EPOX

EPOX MU-8KHA0010 user manual

Ski-Doo Bombardier MPEM 219 700 090 user guide

Ski-Doo

Ski-Doo Bombardier MPEM 219 700 090 user guide

Epson S5U13700P00C000 user manual

Epson

Epson S5U13700P00C000 user manual

https://manuals.online logo
https://manuals.online logoBrands
  • About & Mission
  • Contact us
  • Privacy Policy
  • Terms and Conditions

Copyright 2026 Manuals.Online. All Rights Reserved.

12 : PWR LOSS Header (PWR_LOSS1)
Short : Power Loss
Close : no Power Loss
USB Power Setting Jumpers
25 : USB2_PWR1 (For USB2_4_5)
USB2_PWR2 (For USB2_6_7)
32 : USB3_PWR1 (For USB3_1_2)
USB3_PWR2 (For USB3_3_4)
13 :
Chassis FAN Connector (+12V)
14 : Printer Port / GPIO Header (LPT_GPIO1)
Printer Port: GPIO:
5 : Backlight & Amp Volume Control
(BLT_VOL1)
6 : Inverter Power Control Wafer
(BLT_PWR1)
7 : Backlight Control Level (BLT_PWM1)
(CON_LBKLT_CTL)
1-2 : +3V (eDP)
2-3 : +5V (LVDS)
8 : BL1
Open: Protect LCD_BLT_VCC
Short: No Protect LCD_BLT_VCC
9 : Backlight Power Select
(LCD_BLT_VCC) (BKT_PWR1)
1-2 : LCD_BLT_VCC : +5V
2-3 : LCD_BLT_VCC : +12V
10 :
CPU FAN Connector (+12V)
11 :
24-pin ATX Power Input Connector
COM Port Pin9 PWR Setting Jumpers
1 : PWR_COM1 (For COM Port1)
21 : PWR_COM2 (For COM Port2)
PWR_COM3 (For COM Port3)
PWR_COM4 (For COM Port4)
2 : Panel Power Select (PNL_PWR1)
1-2 : +3V
2-3 : +5V
4-5 : +12V
3 : BL2
Open: Protect LCD_VCC
Short: No Protect LCD_VCC
4 : LVDS Panel Connector
IMB-391
Jumpers and Headers Setting Guide
ATXPWR1
PCI1
PCI2
PCIE1
PCIE2
1
HD_AUDIO1
CMOS
Battery
HDLED RESET
PLED PWRBTN
PANEL1
1
Super
I/O
SATA3_3
SATA3_1
SATA3_2 SATA3_4
CLRMOS2
1
CPU_FAN1
USB2_4_5
1
CI2
1
CI1
Top:
RJ-45
USB 3.0
T: USB3
B: USB4
1
LVDS 1
BLT_PWR1
1
BLT_VOL1
1
BUZZ1
Top:
Line In
Center:
Line Out
Bottom:
Mic In
SPEAKER1
1
VGA1
IMB-391
PNL_PWR1
1
BKT_PWR1
1
ATX12 V1
AUDIO
CODEC
1
BLT_PWM1
LPC1
1
DDR4_A1 (64 bit, 288-pin module)
DDR4_B1 (64 bit, 288-pin module)
Industrial
BIOS
ROM
1
BL2
1
PWR_COM1
1
BL1
1
PWR_LOSS1
PWR_JP1
1
CHA_FAN1
1
LPT_GPIO1
1
USB3_PWR1
1
USB3_PWR2
1
BUZZ2
1
USB2_PWR1
1
USB2_PWR2
USB2_6_7
1
CLRMOS1
1
PWR_COM3
1
PWR_COM4
1
JGPIO_SET1
1
1
JGPIO_PWR1
1
PWR_COM2
1
COM1
PS2
Keyboard
/Mouse
DVI1
Top:
RJ-45
USB 3.0
T: USB1
B: USB2
HDMI1
DP1
COM 2
1
COM 4
1
COM 3
1
GND
+12V
CPU_FAN_SPEED
FAN_SPEED_CONTROL
12
1
24
13
1
SPD0
STB#
SPD1
SPD2
SPD3
SPD4
SPD6
SPD7
GND
GND
SLIN#
PINIT#
ERROR#
AFD#
GND
GND
GND
GND
GND
GND
SPD5
ACK#
BUSY
PE
SLCT
*
If you want to use the printer port function, please
short pin4 and pin5 on
Digital Input / Output Power Select (JGPIO_PWR1).
PIN Signal Name PIN Signal Name
26 NC 25 NA
24 GND 23 SIO_GP30
22 GND 21 SIO_GP31
20 GND 19 SIO_GP32
18 GND 17 SIO_GP33
16 GND 15 SIO_GP34
14 GND 13 SIO_GP35
12 JGPIOPWR 11 SIO_GP36
10 JGPIOPWR 9 SIO_GP37
8 SIO_GP43 7 SIO_GP40
6 SIO_GP44 5 SIO_GP41
4 SIO_GP45 3 SIO_GP42
2 SIO_GP46 1 SIO_GP47
The terms HDMI™ and HDMI High-Denition
Multimedia Interface, and the HDMI logo are
trademarks or registered trademarks of HDMI
Licensing LLC in the United States and other
countries.
1
40
2
139
PIN Signal Name PIN Signal Name
2 R_LVDD 1 R_LVDD
4 LDDC_CLK 3 +3V
6 LVDS_A_DATA0# 5 LDDC_DATA
8 GND 7 LVDS_A_DATA0
10 LVDS_A_DATA1 9 LVDS_A_DATA1#
12 LVDS_A_DATA2# 11 GND
14 GND 13 LVDS_A_DATA2
16 LVDS_A_DATA3 15 LVDS_A_DATA3#
18 LVDS_A_CLK# 17 GND
20 GND 19 LVDS_A_CLK
22 LVDS_B_DATA0 21 LVDS_B_DATA0#
24 LVDS_B_DATA1# 23 GND
26 GND 25 LVDS_B_DATA1
28 LVDS_B_DATA2 27 LVDS_B_DATA2#
30 LVDS_B_DATA3# 29 DPLVDD_EN
32 GND 31 LVDS_B_DATA3
34 LVDS_B_CLK 33 LVDS_B_CLK#
36 CON_LBKLT_EN_R 35 GND
38 LCD_BLT_VCC 37 CON_LBKLT_CTL_R
40 LCD_BLT_VCC 39 LCD_BLT_VCC
PIN Signal Name
7 GND
6 GND
5 GPIO_BLT_DW
4 GPIO_BLT_UP
3 PWRDN
2 GPIO_VOL_DW
1 GPIO_VOL_UP
1
PIN Signal Name
1 GND
2 GND
3 CON_LBKLT_CTL
4 CON_LBKLT_EN
5 LCD_BLT_VCC
6 LCD_BLT_VCC
1
1
3 2 1
+5VSB_ATX
GND
+12V
CHA_FAN_SPEED
FAN_SPEED_CONTROL
3 2 1
P/ N: 15G06M047000AK V1.0
*15G06M047000AK*
15 :
Digital Input / Output Power Select
(JGPIO_SET1)
1-2 : +5V
2-3 : GND
16 : LPC Header
17 : Digital Input / Output Power Select
(JGPIOPWR) (JGPIO_PWR1)
1-2 : +12V
2-3 : +5V
3-4 : +5V
4-5: GND
18 : Chassis Intrusion Headers
(CI1, CI2)
Short
: Active Case Open
Open : Normal
19 :
System Panel Header
20 : COM Port Headers (COM2, 3, 4) (RS232)
22 : Clear CMOS Headers
CLRMOS1 :
1-2 : Normal
2-3 : Clear CMOS
CLRMOS2 :
1-2 : +BATT
2-3 : +3VSB_A
23 : SATA3 Connectors (SATA3_1 ~ SATA3_4)
24 :
USB 2.0 Headers (
USB2_4_5, USB2_6_7
)
26 : Buzzer (BUZZ2)
27 :
Front Panel Audio Header
28 : 3W Audio AMP Output Wafer
29 : ATX/AT Mode Jumper (PWR_JP1)
1-2 : AT Mode
2-3 : ATX Mode
30 :
Audio Jacks
Blue - Line In
Green - Line Out
Pink - Mic In
31 :
Top : RJ45 LAN Port (LAN2)
Bottom : USB 3.0 Ports (USB3_3_4)
33 :
Top : RJ45 LAN Port (LAN1)
Bottom : USB 3.0 Ports (USB3_1_2)
34 :
Top : DisplayPort (DP1)
Bottom : HDMI Port (HDMI1)
35 : ATX 12V Power Connector
36 :
Top : D-Sub Port (VGA1)
Bottom : DVI Port (DVI1)
ATXPWR1
PCI1
PCI2
PCIE1
PCIE2
1
HD_AUDIO1
CMOS
Battery
HDLED RESET
PLED PWRBTN
PANEL1
1
Super
I/O
SATA3_3
SATA3_1
SATA3_2 SATA3_4
CLRMOS2
1
CPU_FAN1
USB2_4_5
1
CI2
1
CI1
Top:
RJ-45
USB 3.0
T: USB3
B: USB4
1
LVDS 1
BLT_PWR1
1
BLT_VOL1
1
BUZZ1
Top:
Line In
Center:
Line Out
Bottom:
Mic In
SPEAKER1
1
VGA1
IMB-391
PNL_PWR1
1
BKT_PWR1
1
ATX12V 1
AUDIO
CODEC
1
BLT_PWM1
LPC1
1
DDR4_A1 (64 bit, 288-pin module)
DDR4_B1 (64 bit, 288-pin module)
Industrial
BIOS
ROM
1
BL2
1
PWR_COM1
1
BL1
1
PWR_LOSS1
PWR_JP1
1
CHA_FAN1
1
LPT_GPIO1
1
USB3_PWR1
1
USB3_PWR2
1
BUZZ2
1
USB2_PWR1
1
USB2_PWR2
USB2_6_7
1
CLRMOS1
1
PWR_COM3
1
PWR_COM4
1
JGPIO_SET1
1
1
JGPIO_PWR1
1
PWR_COM2
1
COM1
PS2
Keyboard
/Mouse
DVI1
Top:
RJ-45
USB 3.0
T: USB1
B: USB2
HDMI1
DP1
COM 2
1
COM 4
1
COM 3
1
37 :
Top : COM Port (COM1)
(RS232/422/485)*
Bottom : PS/2 Keyboard/Mouse Port
* This motherboard supports RS232/422/485 on COM1 port. Please
refer to below table for the pin denition. In addition, COM1 port
(RS232/422/485) can be adjusted in BIOS setup utility > Advanced
Screen > Super IO Conguration. You may refer to our user manual
for details.
COM1 Port Pin Denition
PIN RS232 RS422 RS485
1 DCD, Data Carrier Detect TX- RTX-
2 RXD, Receive Data RX+ N/A
3 TXD, Transmit Data TX+ RTX+
4 DTR, Data Terminal Ready RX- N/A
5 GND GND GND
6 DSR, Data Set Ready N/A N/A
7 RTS, Request To Send N/A N/A
8 CTS, Clear To Send N/A N/A
9 No Power/5V/12V N/A N/A
1
GND
GND
S_PWRDWN#
LAD2
SMB_CLK_MAIN
PCICLK
PCIRST#
LAD3
+3.3V
LAD0
GND
FRAME
SMB_DATA_MAIN
LAD1
SERIRQ#
GND
+3.3V STANDBY
48MHz
+5V
1
1
Signal
GND
GND
RESET#
PWRBTN#
PLED-
PLED+
GND
HDLED-
HDLED+
1
GND
DUMMY
GND
GND
P+
P-
USB_PWR
P+
P-
USB_PWR
1
1
PIN Signal
Name PIN Signal
Name PIN Signal
Name PIN Signal
Name
4OUTRN 3OUTRP 2OUTLP 1OUTLN
5 1
8 4
1
2
PIN Signal
Name PIN Signal
Name PIN Signal
Name PIN Signal
Name PIN Signal
Name
10 N/A 8CCTS# 6DDSR# 4DDTR# 2RRXD
9+5V 7RRTS# 5GND 3TTXD 1DDCD#