No part of this documentation may be reproduced, transcribed, transmitted, or
translated in any language, in any form or by any means, except duplication of
documentation by the purchaser for backup purpose, without written consent of
ASRock Inc.
Products and corporate names appearing in this documentation may or may not
be registered trademarks or copyrights of their respective companies, and are used
only for identication or explanation and to the owners’ benet, without intent to
infringe.
Disclaimer:
Specications and information contained in this documentation are furnished for
informational use only and subject to change without notice, and should not be
constructed as a commitment by ASRock. ASRock assumes no responsibility for
any errors or omissions that may appear in this documentation.
With respect to the contents of this documentation, ASRock does not provide
warranty of any kind, either expressed or implied, including but not limited to
the implied warranties or conditions of merchantability or tness for a particular
purpose.
In no event shall ASRock, its directors, ocers, employees, or agents be liable for
any indirect, special, incidental, or consequential damages (including damages for
loss of prots, loss of business, loss of data, interruption of business and the like),
even if ASRock has been advised of the possibility of such damages arising from any
defect or error in the documentation or product.
is device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
CALIFORNIA, USA ONLY
e Lithium battery adopted on this motherboard contains Perchlorate, a toxic substance
controlled in Perchlorate Best Management Practices (BMP) regulations passed by the
California Legislature. When you discard the Lithium battery in California, USA, please
follow the related regulations in advance.
“Perchlorate Material-special handling may apply, see ww w.dtsc.ca.gov/hazardouswaste/
perchlorate”
ASRock Website: http://www.asrock.com
AUSTRALIA ONLY
Our goods come with guarantees that cannot be excluded under the Australian Consumer
Law. You are entitled to a replacement or refund for a major failure and compensation for
any other reasonably foreseeable loss or damage caused by our goods. You are also entitled
to have the goods repaired or replaced if the goods fail to be of acceptable quality and the
failure does not amount to a major failure. If you require assistance please call ASRock Tel
: +886-2-28965588 ext.123 (Standard International call charges apply)
e terms HDMI™ and HDMI High-Denition Multimedia Interface, and the HDMI
logo are trademarks or registered trademarks of HDMI Licensing LLC in the United
States and other countries.
ank you for purchasing ASRock AB350M Pro4 / A320M Pro4 motherboard,
a reliable motherboard produced under ASRock ’s consistently stringent quality
control. It delivers excellent performance with robust design conforming to
ASRock’s commitment to quality and endurance.
In this manual, Chapter 1 and 2 contains the introduction of the motherboard
and step-by-step installation guides. Chapter 3 contains the operation guide of the
soware and utilities. Chapter 4 contains the conguration guide of the BIOS setup.
Becau se the motherboard specications and the BIOS soware might be updated, the
content of this manual will be subject to change without notice. In ca se any modications of this manual occur, the updated version will be available on ASRock’s website
without further notice. If you require technical suppor t related to this motherboard,
please visit our website for spe cic information about the model you are using. You
may nd the l atest VGA cards and CPU support list on ASRock ’s website a s well.
ASRock website http://www.a srock .com.
Please realize that the re is a certain r isk involved with overclo cking, including adju sting the setting in the BIOS, applying Untied Ove rclocking Technology, or using thirdparty o verclocking tools. Overclocking may aect your system’s stability, or even c ause
damage to the components and dev ices of your system. It should be done at your own
risk and expense. We are not responsible for possible damage cau sed by overclocking.
English
5
1.3 Motherboard Layout
ATXP WR 1
Sup er
I/O
CLRCMOS1
1
PCI E2
1
USB_2_3
HD_AUDI O1
1
CPU_FAN1
Top:
LINE IN
Center :
FRONT
Bottom :
MIC IN
RJ- 45 L AN
USB 2 .0
T: USB1
B: US B2
SOCKE T AM 4
Fro nt U SB 3. 0
1
COM1
CMO S
Bat tery
ATX12V1
USB 3.0
USB31_T C_1
M2_1
Ult ra M .2
PCIe G en3 x4
USB3_3 _4
1
CHA_FAN1
CHA_FAN2
HDLED RESET
PLED PWRBTN
PANEL1
1
RoH S
SPK_PLED 1
1
PCI E xp res s 3.0
DDR4 _A1 (64 bit, 288 -pin mod ule)
DDR4 _A2 (64 bit, 288 -pin mod ule )
DDR4 _B1 (64 bit, 288 -pin mod ule )
DDR4 _B2 (64 bit, 288 -pin mod ule )
PCI E1
PCI E3
M2_2
M2_2_CT 2M2_2_CT 3M 2_2_CT4M2_2_CT1
AMD
Pro m ont ory
B35 0
PS2
Keybo ard
PS2
Mouse
USB 3 .0
T: USB2
B: US B3
USB 3 .0
T: USB4
B: US B5
RGB_HEADE R11AMD_FAN_LE D1
1
USB_5
1
M2_1_CT 3M2_1_CT 2M 2_1_CT1
1
USB_2_4
TPMS1
1
SATA3_3
SATA3_4
SATA3_1
SATA3_2
AB35 0M Pro4
HDMI 1
DVI1
VGA1
AB350M Pro4:
BIOS
ROM
English
6
No. Description
1ATX 12V Power Connector (ATX12V1)
2CPU Fan Connector (CPU_FAN1)
32 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)
42 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)
5RGB LED Header (RGB_HEADER1)
6AMD Fan LED Header (AMD_FAN_LED1)
7ATX Power Connector (ATXPWR1)
8USB 3.0 Header (USB3_3_4)
9AMD LED Fan USB Header (USB_5)
10 SATA3 Connector (SATA3_3)
11 SATA3 Connector (SATA3_4)
12 SATA3 Connector (SATA3_2)
13 SATA3 Connector (SATA3_1)
14 System Panel Header (PANEL1)
15 Power LED and Speaker Header (SPK_PLED1)
16 Chassis Fan Connector (CHA_FAN2)
17 USB 2.0 Header (USB_2 _3)
18 USB 2.0 Header (USB_2 _4)
19 Clear CMOS Jumper (CLRCMOS1)
20 COM Port Header (COM1)
21 TPM Header (TPMS1)
22 Front Panel Audio Header (HD_ AUDIO1)
23 Chassis Fan Connector (CHA _FAN1)
AB350M Pro4
A320M Pro4
English
7
A320M Pro4:
ATXP WR 1
Sup er
I/O
CLRCMOS1
1
PCI E2
1
USB_2_3
HD_AUDI O1
1
CPU_FAN1
Top:
LINE IN
Center :
FRONT
Bottom :
MIC IN
RJ- 45 L AN
USB 2 .0
T: USB1
B: US B2
SOCKE T AM 4
Fro nt U SB 3. 0
1
COM1
CMO S
Bat tery
ATX12V1
USB 3.0
USB31_T C_1
M2_1
Ult ra M .2
PCIe G en3 x4
USB3_3 _4
1
CHA_FAN1
CHA_FAN2
HDLED RESET
PLED PWRBTN
PANEL1
1
RoH S
SPK_PLED 1
1
PCI E xp res s 3.0
DDR4 _A1 (64 bit, 288 -pin mod ule)
DDR4 _A2 (64 bit, 288 -pin mod ule )
DDR4 _B1 (64 bit, 288 -pin mod ule )
DDR4 _B2 (64 bit, 288 -pin mod ule )
PCI E1
PCI E3
M2_2
M2_2_CT 2M2_2_CT 3M 2_2_CT4M2_2_CT1
AMD
Pro m ont ory
A32 0
PS2
Keybo ard
PS2
Mouse
USB 3 .0
T: USB2
B: US B3
USB 3 .0
T: USB4
B: US B5
RGB_HEADE R11AMD_FAN_LE D1
1
M2_1_CT 3M2_1_CT 2M 2_1_CT1
1
USB_2_4
TPMS1
1
SATA3_3
SATA3_4
SATA3_1
SATA3_2
20
19
21
22
A320 M Pro 4
HDMI 1
DVI1
VGA1
1
5
3
2
4
6
7
English
8
BIOS
ROM
8
9
10
11
12
17
18
14
15
16
13
No. Description
1ATX 12V Power Connector (ATX12V1)
2CPU Fan Connector (CPU_FAN1)
32 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)
42 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)
5RGB LED Header (RGB_HEADER1)
6AMD Fan LED Header (AMD_FAN_LED1)
7ATX Power Connector (ATXPWR1)
8USB 3.0 Header (USB3_3_4)
9SATA3 Connector (SATA3_3)
10 SATA3 Connector (SATA3_4)
11 SATA3 Connector (SATA3_2)
12 SATA3 Connector (SATA3_1)
13 System Panel Header (PANEL1)
14 Power LED and Speaker Header (SPK_PLED1)
15 Chassis Fan Connector (CHA_FAN2)
16 USB 2.0 Header (USB_2 _3)
17 USB 2.0 Header (USB_2 _4)
18 Clear CMOS Jumper (CLRCMOS1)
19 COM Port Header (COM1)
20 TPM Header (TPMS1)
21 Front Panel Audio Header (HD_AUDIO1)
22 Chassis Fan Connector (CHA _FAN1)
AB350M Pro4
A320M Pro4
English
9
1.4 I/O Panel
1
4
2
3
5
English
11
10
8791312
No. DescriptionNo. Description
1PS/2 Mouse Port8USB 3.0 Ports (USB3_23)
2DVI-D Port9USB 3.0 Type-C Port (USB31_TC_1)
3LAN RJ-45 Port*10HDMI Port
4Line In (Light Blue)**11D-Sub Port
5Front Speaker (Lime)**12USB 2.0 Ports (USB_1_2)
6Microphone (Pink)**13PS/2 Keyboard Port
7USB 3.0 Ports (USB3_45)
* ere are two LEDs on each LAN port. Please refer to the table below for the LAN port LED indications .
** To congure 7.1 CH HD Audio, it i s required to use an HD front panel audio module and enable the multichannel audio feature through the audio driver.
Please set Speaker Conguration to “7.1 Speaker”in the Realtek HD Audio Manager.
AB350M Pro4
A320M Pro4
Function of the Audio Por ts in 7.1-channel Con guration:
PortFunction
Light Blue (Rear panel)Rear Speaker Out
Lime (Rear panel)Front Speaker Out
Pink (Rear panel)Central /Subwoofer Speaker Out
Lime (Front panel)Side Speaker Out
English
11
Chapter 2 Installation
is is a Micro ATX form factor motherboard. Before you install the motherboard,
study the conguration of your chassis to ensure that the motherboard ts into it.
Pre-installation Precautions
Take note of the following precautions before you install motherboard components
or change any motherboard settings.
Make sure to unplug the power cord before installing or removing the motherboard.
•
Failure to do so may cause physical injuries to you and damages to motherboard
components.
In order to avoid damage from static electricity to the motherboard’s components,
•
NEVER place your motherboard directly on a carpet. Also remember to use a grounded
wrist strap or touch a safety grounded object before you handle the components.
Hold components by the edges and do not touch the ICs.
•
Whenever you uninstall any components, place them on a grounded anti-static pad or
•
in the bag that comes with the components.
When placing screws to secure the motherboard to the chassis, please do not over-
•
tighten the screws! Doing so may damage the motherboard.
English
12
2.1 Installing the CPU
Unplug all power cables be fore installing the CPU.
1
AB350M Pro4
A320M Pro4
2
English
13
3
English
14
2.2 Installing the CPU Fan and Heatsink
Aer you install the CPU into this motherboard, it is necessary to install a larger
heatsink and cooling fan to dissipate heat. You also need to spray thermal grease
between the CPU and the heatsink to improve heat dissipation. Ma ke sure that the
CPU and the heatsink are securely fastened and in good contact with each other.
Please turn o the power or remove the power cord before changing a CPU or heatsink.
Installing the CPU Box Cooler SR1
1
AB350M Pro4
A320M Pro4
2
English
15
3
English
16
4
1
N
FA
_
U
P
C
Installing the AM4 Box Cooler SR2
1
AB350M Pro4
A320M Pro4
2
English
17
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