Scan code: LN79072 Manufacturer code: 90-MXB520-A0UAYZ

ASRock AMD AM4 Ryzen AB350M Pro4 Micro ATX Motherboard

ASRock AB350M Pro4, AMD B350, S AM4, DDR4, SATA3, M.2 (PCIe/SATA), Realtek LAN, USB 3.0 A+C, MicroATX

Thumbnail 1 : ASRock AMD AM4 Ryzen AB350M Pro4 Micro ATX Motherboard Thumbnail 2 : ASRock AMD AM4 Ryzen AB350M Pro4 Micro ATX Motherboard Thumbnail 3 : ASRock AMD AM4 Ryzen AB350M Pro4 Micro ATX Motherboard Thumbnail 4 : ASRock AMD AM4 Ryzen AB350M Pro4 Micro ATX Motherboard
Scan code: LN79072 Manufacturer code: 90-MXB520-A0UAYZ
spend over £225 and Buy Now, Pay Later or spread the cost of your finance over 24-48 months with a 10% deposit.
Delivery Options
  • By DPD On 23rd Oct 2018 to your specified address. | £5.48 Receive SMS with one-hour delivery window Weekend, timed and European delivery options are available at checkout

    Have your parcel delivered by DPD to your specified address. Receive SMS with one-hour delivery window

    Weekend, timed and European delivery options are available at checkout
  • Collect instore Collect from our Bolton store, BL6 6PE | Free

    Order online, collect from our Bolton store (25-28 Enterprise Park, Middlebrook, Horwich, Bolton, BL6 6PE)

  • UPS and DPD Pickup Pickup from local convenience store | £4.79

    Collect your parcel from your newsagents, petrol stations and convenience stores

  • SCANPROTECT Protect against installation damage for 28 days. More info

    ScanProtect is an enhanced warranty specifically designed and offered by Scan to reduce the risk of any mishap or damage to components during installation.

    Our aim with ScanProtect is to encourage our customers to upgrade or build their own PC confidently. For a small additional fee our customers are provided with complete peace of mind.

Frequently Bought Together
Product Overview Dual M.2 For SSD
One PCIe Gen3 x4 Ultra M.2 interface that pushes data transfer speeds up to 32Gb/s, and is compatible with ASRock’s U.2 Kit for installing some of the world’s fastest U.2 PCIe Gen3 x4 SSD. The other one supports SATA3 6Gb/s M.2 modules.

Triple Monitor
Choose up to three display interfaces to connect monitors and use them simultaneously.
* AMD A-series APUs Only.

Digi Power
For smooth and efficient CPU Vcore voltage.

ELNA Audio Caps
The 3uA leakage current of ELNA audio caps is the key to reduce noise levels and satisfy even the pickiest audiophiles.

USB Type-C
A latest reversible USB Type-C design that ¬fits the connector either way.

Super Alloy
• Premium 42A Power Choke.
• Sapphire Black PCB.
• High Density Glass Fabric PCB.
• 2oz Copper PCB. Features • ASRock Super Alloy.
• Supports AMD Socket AM4 A-Series APUs (Bristol Ridge) and Ryzen Series CPUs (Summit Ridge).
• Supports DDR4 2666.
• 1 PCIe 3.0 x16, 1 PCIe 2.0 x16, 1 PCIe 2.0 x1.
• Graphics Output: HDMI, DVI-D, D-Sub.
• 7.1 CH HD Audio (Realtek ALC892 Audio Codec), ELNA Audio Caps.
• 4 SATA3, 1 Ultra M.2 (PCIe Gen3 x4), 1 M.2 (SATA3).
• 7 USB 3.0 (1 Type-C, 2 Front, 4 Rear).
• Realtek Gigabit LAN.

Please Note:
This motherboards graphics outputs are intended for use with future AMD processors with on-board graphics. Ryzen 7 CPUs do not feature on-board graphics, so when using these CPUs, the motherboards graphics ports will be disabled, and as such a discrete graphics card will be required for operation.
Core Specifications
Form Factor MicroATX
CPU Socket AM4
Chipset AMD B350
RAM Memory Support
Memory Type DDR4
Memory Channel Dual (2)
Memory Type (ECC) Non-ECC
Memory Type (R/U) UDIMM (Unbuffered)
Memory Speed (Mhz)
  • DDR4 - 2133
  • DDR4 - 2400
  • DDR4 - 2666
Max. Memory Capacity 64GB (4x16GB)
Audio Realtek ALC892 7.1 HD Audio
Graphics Support
Primary GPU Interface PCIe 3.0 (x16)
NVIDIA SLI Support Not Supported
AMD CrossFire Support Not Supported
Integrated Graphics  
On-Board Graphics Connectors
  • D-Sub (VGA)
  • DVI-D
  • HDMI
Internal Connectivity
Expansion Slots
  • 1 x M.2, 2230/2242/2260/2280, SATA
  • 1 x M.2, 2242/2260/2280, PCIe
  • 1 x PCIe 2.0 x1
  • 1 x PCIe 2.0 x16 (x4 Bandwidth)
  • 1 x PCIe 3.0 x16
SATA Support SATA3 / M.2
RAID Support via SATA
Storage Mode Support
  • AHCI
  • Hot Plug
  • NCQ
  • NVMe Boot (via M.2 PCIe Slot)
  • NVMe Boot (via PCIe 3.0 Slot)
  • RAID 0
  • RAID 1
  • RAID 10
Internal I/O
  • 1 x 24-pin (Power)
  • 1 x 4-pin CPU Fan Connector
  • 2 x 4-pin System Fan Connector
  • 1 x 8-pin (Power)
  • 1 x AMD Fan LED Header
  • 1 x AMD LED Fan USB Header
  • 1 x Front Panel Audio Header
  • 1 x Power LED / Speaker Header
  • 1 x RGB LED connector
  • 4 x SATA III - 6Gb/s
  • 1 x Serial (COM) Header
  • 1 x TPM Header
  • 2 x USB 2.0 Header
  • 1 x USB 3.0 Header
External Connectivity
Network Interface Type Wired Gigabit LAN (10/100/1000)
Network Chip/Modules 1 x Realtek RTL8111GR (Gigabit LAN)
Rear I/O Connectors
  • 1 x 10/100/1000 (LAN)
  • 1 x D-Sub (VGA) Out
  • 1 x DVI-D
  • 1 x Front Speaker Out
  • 1 x HDMI
  • 1 x Line In
  • 1 x Mic-In
  • 1 x PS/2 Keyboard
  • 1 x PS/2 Mouse
  • 2 x USB 2.0
  • 4 x USB 3.0
  • 1 x USB 3.0 Type-C
Other Motherboard Specifications
Water Cooled No
QPI Speed N/A
Board Dimensions  

Please note your statutory rights are not affected.

For further information regarding Scan's warranty procedure please see our terms and conditions

24 months
Return to base
DOA Period:
28 days
RTB Period:
24 months
Manufacturer Contact Details
0871 472 4747
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TekSpek Guides
AMD Ryzen Chipset
AMD Ryzen Chipset
Date Issued: 20th Nov 2017

AMD made waves in the premium consumer CPU market during March 2017 when it debuted Ryzen processors based on the Zen architecture that had been in development for the previous four years

Read More

ASRock AB350M Pro4, AMD B350, S AM4, DDR4, SATA3, M.2 (PCIe/SATA), Realtek LAN, USB 3.0 A+C, MicroATX is rated 4.3 out of 5 by 6.
Rated 5 out of 5 by from This product is best of quality This motherboard is 100 percent one of the best motherboards you can get inn this price range with loads of different ports including TYPE C!! Absoluetly great at doing things in 4k and works perfectly with my gtx 1060 and ryzen 5!
Date published: 2017-12-29
Rated 1 out of 5 by from Problems with onboard LAN I've tried two of these motherboards (Scan replaced the first one). Both had the same problem. On first clean install Windows 10 won't get the onboard NIC working, so you have to install with a local account, but that's only the start. Once you've installed and booted you then try to install the ASRock supplied LAN driver on the CD and it crashes your installation and messes up the BIOS settings so it won't reboot correctly. When you sort the BIOS to force a reboot you need to do an Automatic repair of Windows to fix it, and you still have no network. I used a USB based LAN driver to get mine working and downloaded the latest drivers from both ASRock and Realtek - both have the same problem of crash and corrupt Windows. I replaced the motherboard and had the same problem with the next one too and now just have a PCI NIC installed instead.
Date published: 2017-10-03
Rated 5 out of 5 by from Good value stable & reliable This has been used as the basis of my 1st new-build PC for a few years. The quality of the board is very good, with everything solid and well-made, but without frills. I'm not seriously into overclocks etc, but there appears to be plenty of scope for it if that's what you want.
Date published: 2017-09-30
Rated 5 out of 5 by from Hit 3200mhz with my RAM :) Great board. Love that I can hit 3200 with my corsair Vengeance. Can online update BIOS from within the BIOS.
Date published: 2017-08-23
Rated 5 out of 5 by from Great Ryzen 5 board Really easy to use BIOS, good support for RAM, nice aesthetics. I got some Corsair LPX RAM (CL15) that wasn't on their QVL and it still overclocked to 3066mhz
Date published: 2017-08-18
Rated 5 out of 5 by from More than enough connectivity for me ! I couldn't get it to turn on at first so had to RMA it which was very easy thanks to Scan's service. It was tested by Scan and they found no fault so I got it back and they were right ! Must have just been a error on my part, although I tried it with another PSU and still couldn't get it to work. All the connections and features that I could ever need and more, plenty of possible future upgrade possibilities too. Apart from the RGB fan header there are 2 other PWM fan headers and a 3 pin fan header plus another 2 USB fan headers. I am using an aftermarket cooler and was able to get a suitable adapter kit from another supplier very cheaply.
Date published: 2017-06-12
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Questions & Answers

Ryzen 5 1600

The manufacturer code on the Ryzen 5 1600 is different on the "supported list" to what is shown when purchasing the product from scan itself, would the CPU still work with this board without needing to go back to the manufacturer for a bios update? (Already purchased the CPU and really don't want all the hassle of sending the board back for a bios update if it doesn't / wouldn't post)
Asked by: Raven
Hello, If the supported CPU list does not specifically state your particular model of Ryzen CPU we cannot guarantee it will be compatible without a BIOS update. Regards,
Answered by: JackB
Date published: 2017-12-14
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ASRock AMD AM4 Ryzen AB350M Pro4 Micro ATX Motherboard
ASRock AMD AM4 Ryzen AB350M Pro4 Micro ATX Motherboard