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ASRock AB350M Pro4 AM4 AMD Promontory B350 SATA 6Gb/s USB 3.1 HDMI Micro ATX AMD Motherboard

MPN: AB350M Pro4 | SKU: FS4591
Regular Price: $122.80
Price: $84.87
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  • Chipset: AMD Promontory B350
  • Memory: 4x DDR4-2667/2400/2133 DIMM Slots, Dual Channel, ECC, Non-ECC, Unbuffered, Max Capacity of 64GB
  • Slots: 2x PCI-Express 3.0 x16 Slots (one runs at x4), 1x PCI-Express 2.0 x1 Slot
  • SATA: 4x SATA3 Ports, Support RAID 0, 1, 10
  • Video: Integrated AMD Radeo R-Series Graphics in A-series APU
  • Supports AMD Socket AM4 A-Series APUs (Bristol Ridge) and Ryzen Series CPUs (Summit Ridge)
  • Supports DDR4 3200+ (OC) (Ryzen CPU) / 2400 (A-series APU)
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  • Key Selling Points

Key Selling Points

  • Chipset: AMD Promontory B350
  • Memory: 4x DDR4-2667/2400/2133 DIMM Slots, Dual Channel, ECC, Non-ECC, Unbuffered, Max Capacity of 64GB
  • Slots: 2x PCI-Express 3.0 x16 Slots (one runs at x4), 1x PCI-Express 2.0 x1 Slot
  • SATA: 4x SATA3 Ports, Support RAID 0, 1, 10
  • Video: Integrated AMD Radeo R-Series Graphics in A-series APU
  • Supports AMD Socket AM4 A-Series APUs (Bristol Ridge) and Ryzen Series CPUs (Summit Ridge)
  • Supports DDR4 3200+ (OC) (Ryzen CPU) / 2400 (A-series APU)
  • Description
  • Product Details
  • Customer Reviews
  • Q&A


Prepare yourself well to enjoy the impressive world of Virtual Reality. Before that, you have to make sure everything is qualified, including hardware, software and drivers. Motherboard is the key to connect every critical components and ASRock's VR Ready motherboards are definitely the one you're looking for. The premium qualify is assured by rigorous testing during development. The sturdy components and rock-slid performance makes you completely immersive in the VR scenario. Users can be assured to experience VR enjoyments without any compatibility problems. 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. And the other one supports SATA3 6Gb/s M.2 modules. The ASRock AB350M Pro4 motherboard supports AM4 processors and will fit in a standard Micro ATX case. This board is powered by the AMD B350 chipset and has support for 4 x 288-pin DIMM memory sticks with a max memory of up to 64GB. You can choose memory speeds of up to DDR4-2133 / 2400 / 2666 / 2933 / 3200. This motherboard has 4 SATA ports and 1 x 10/100/1000 Mbps Ethernet built-in.

  • ASRock Super Alloy
  • Supports DDR4 memory
  • AMD Quad CrossFireX
  • 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


  • ASRock AB350M Pro4 AM4 Micro ATX Motherboard
  • Quick Installation Guide
  • Support CD
  • I/O Shield
  • 2 x SATA data cables
  • 2 X Screws for M.2 sockets

Brand: ASRock

MPN: AB350M Pro4

UPC: 4717677333176

Compatibility: AM4, MicroATX

Packaging: Retail

Condition: New

Product Details

AB350M Pro4
CPU Socket Type
Processor Type
Supports AMD Socket AM4 A-Series APUs (Bristol Ridge) and Ryzen Series CPUs (Summit Ridge)
AMD Promontory B350
Number of Memory Slots
Memory Standard
Ryzen series CPUs support DDR4 3200+(OC)/ 2933(OC)/ 2667/ 2400/ 2133*
7th Gen A-Series APUs support DDR4 2400/ 2133*
*Please refer to Memory Support List on ASRock's website for more information.
Maximum Memory Supported
**Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows 32-bit OS. For Windows 64-bit OS with 64-bit CPU, there is no such limitation.
Channel Supported
Dual Channel
PCI Express 3.0 x16
AMD Ryzen series CPUs
- 1 x PCI Express 3.0 x16 Slot (PCIE2: x16 mode)*
AMD 7th A-Series APUs
- 1 x PCI Express 3.0 x16 Slot (PCIE2: x8 mode)*

*Supports NVMe SSD as boot disks
PCI Express 2.0 x16
AMD Ryzen series CPUs
- 1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode)

AMD 7th A-Series APUs
- 1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode)
PCI Express x1
1 x PCI Express 2.0 x1 Slot
SATA 6Gb/s
4 x SATA3 6.0Gb/s*
*M2_2 and SATA3_3 share lanes. If either one of them is in use, the other one will be disabled.
M.2 (Key M)
1 x Ultra M.2 Socket (M2_1), type 2242/2260/2280 M.2 PCI Express module up to Gen3 x4 (32Gb/s) (with Ryzen Series CPU) or Gen3 x2 (16Gb/s) (with A-Series APU)**
1 x M.2 Socket (M2_2), type 2230/2242/2260/2280 M.2 SATA3 6.0Gb/s module**

**Supports NVMe SSD as boot disks
**Supports ASRock U.2 Kit
Onboard Video Chipset
Integrated AMD Radeon R-Series Graphics in A-series APU*
- DirectX 12, Pixel Shader 5.0
- Max. shared memory 2GB
- Three graphics output options: D-Sub, DVI-D and HDMI
- Supports Triple Monitor
- Supports HDMI with max. resolution up to 4K x 2K (4096x2160) @ 24Hz / (3840x2160) @ 30Hz
- Supports DVI-D with max. resolution up to 1920x1200 @ 60Hx
- Supports D-Sub with max. resolution up to 1920o1200 @ 60Hz
- Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR (High Bit Rate Audio) with HDMI Port (Compliant HDMI monitor is required)
- Supports HDCP with DVI-D and HDMI Ports
- Supports Full HD 1080p Blu-ray (BD) playback with DVI-D and HDMI Ports

*Actual support may vary by CPU
Audio Chipset
Realtek ALC892
Audio Channels
7.1 Channels*
*To configure 7.1 CH HD Audio, it is required to use an HD front panel audio module and enable the multi-channel audio feature through the audio driver.
LAN Chipset
Realtek 8111GR
Max LAN Speed
1 x PS/2 Mouse Port
1 x PS/2 Keyboard Port
Video Ports
1 x D-Sub Port
1 x DVI-D Port
1 x HDMI
1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
USB 3.1
1 x USB 3.1 Gen1 Type-C Port
4 x USB 3.1 Gen1 Ports
USB 1.1/2.0
2 x USB 2.0 Ports
Audio Ports
HD Audio Jacks: Line in / Front Speaker / Microphone
Onboard USB
2 x USB 2.0 Headers (Support 4 USB 2.0 ports)
1 x USB 3.1 Gen1 Header (Supports 2 USB 3.1 Gen1 ports)
Other Connectors
1 x COM Port Header
1 x TPM Header
1 x Power LED and Speaker Header
1 x RGB LED Header*
1 x AMD Fan LED Header*
1 x CPU Fan Connector (4-pin)**
2 x Chassis Fan Connectors (1 x 3-pin, 1 x 4-pin Smart Fan Speed Control)***
1 x Front Panel Audio Connector
1 x AMD LED Fan USB Header

*Supports in total up to 12V/3A, 36W LED Strip.
*The AMD Fan LED Header supports LED strips of maximum load of 3A (36W) and length up to 2.5M.
**The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power.
***CHA_FAN1 can auto detect if 3-pin or 4-pin fan is in use.
Form Factor
Micro ATX
Dimensions (W x L)
9.6" x 9.6"
Power Pin
1 x 24-pin ATX Power Connector
1 x 8-pin 12V Power Connector
Unique Feature:
ASRock Super Alloy
- Premium 42A Power Choke
- Sapphire Black PCB
- High Density Glass Fabric PCB
- 2oz Copper PCB
ASRock Ultra M.2 (PCIe Gen3 x4)
ASRock Full Spike Protection (for all USB, Audio, LAN Ports)
ASRock Live Update & APP Shop

- 128MB AMI UEFI Legal BIOS with multilingual GUI support
- Supports "Plug and Play"
- ACPI 5.1 compliance wake up events
- Supports jumperfree
- SMBIOS 2.3 support
- DRAM Voltage multi-adjustment

Software and UEFI:
- ASRock A-Tuning
- ASRock APP Charger
- ASRock XFast LAN
- ASRock Full HD UEFI
- ASRock Instant Flash
- ASRock Internet Flash
- ASRock Easy RAID Installer
*These utilities can be downloaded from ASRock Live Update & APP Shop.

Support CD:
- Drivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar

Hardware Monitor:
- CPU/Chassis temperature sensing
- CPU/Chassis Fan Tachometer
- CPU/Chassis Quiet Fan
- CPU/Chassis Fan multi-speed control
- Voltage monitoring: +12V, +5V, +3.3V, Vcore

- Microsoft Windows 10 64-bit

- ErP/EuP ready (ErP/EuP ready power supply is required)

Package Includes

Customer Reviews

Review Summary
36.0% (9)
12.0% (3)
12.0% (3)
8.0% (2)
32.0% (8)
By Said Munthe
Amazing, but with one quirk...
First and foremost, i bought this from a competitor since it was out of stock at the time of purchase. As a "budget" board, this thing is pretty stellar, but there is one relatively annoying quirk: there is no llc (load line calibration). This board has quite a bit of voltage droop when the cpu is under heavy load, which can make it unstable if you don't feed it enough power (this is pretty much only a concern when overclocking). For example, my ryzen 7 1700 can get a stable 4ghz at 1.42v, but to achieve that stability i need to set the vcore to 1.5v to account for the massive drooping under load. Due to temps and potential lower chip life i'm unwilling to go that high so i decided to stick with 3.9ghz @ 1.33250v (the 3.9-4ghz bridge almost always needs a big voltage bump on ryzen). I contacted asrock on the matter to see if llc would ever be included in a bios update and they said "due to the power design, ab350m pro4 does not have llc setting in the bios". Sad, but i guess budget boards have to lack something from the high end. That being said, i can't complain. For the price this can't be beat. I really enjoy the nice neutral design with no flashy leds. You can pretty much build anything around a black/white motherboard!Edit: board as well now supports up to 4000mhz ram with the agesa bios update. Have my 16gb (8gbx2) of patriot viper elite ddr4 3200 running at 3333mhz without a single issue!Edit2: i'd as well like to add that without some super cooling methods, it's unlikely that the ryzen imc could actually handle 4000mhz, but i don't have any to test to confirm this.
By Milan Rolland
Nice motherboard; installing linux is an issue; documentation needs improvement
I built a system based on this motherboard, an amd ryzen 5 1600 cpu, two g.Skill 16 gb ddr4 pc4-25600 3200 mhz ram modules, and an msi gaming radeon rx 460 gddr5 2 gb graphics card.My initial intention was to install some flavor of linux on this system from a live usb stick. I made three attempts: ubuntu 16.04, ubuntu 17.04, and fedora core 26 (kde spin). Oddly, the ubuntu 16.04 booted, but the installation failed, while the other two sticks would not even boot. I haven't yet identified the source of the problem.After this failure, i decided to try installing windows 10 from a usb stick. This worked, but the system would hang for long periods of time. This problem was resolved by flashing the bios. The motherboard has a nice, easy to use uefi interface, which made flashing the bios easy. I as well had to download a network driver from the vendor's website and install it in order get the network interface to work. The system seems to be working fine now, and i like it. (except that it's running windows, not linux.)all that said, i have two complaints:1. I would like to see linux support for this motherboard.2. The documentation could be better. The installation guide consists mostly of pictures. Pictures are good, but it would be desirable for them to be complemented with explanations in the form of text. I have not had much experience building computers, and i couldn't figure out from the guide which slots to use when installing memory. The memory slots are clearly labeled a1, a2, b1, b2. I assumed at first that the modules should installed in slots a1 and a2. I then noticed in a diagram (and its legend) that the slots are paired a1, b1 and a2, b2, so i moved the modules to a1, b1. I then consulted the faq for this motherboard on the vendor's website and discovered that two modules should be installed in slots a2, b2. It would have saved me some time and frustration if this part of the documentation included a sentence like "if you are installing two ram modules, place them in slots a2 and b2."
By Millie Turner
Great board!
I used motherboard for my first computer build in conjunction with a ryzen 6 core and an nvme drive. I thought the build went smoothly considering it was my first pc build. I'm looking forward to adding another m.2 drive for storage.
By Mildred Frazier
Be careful overclocking, consider x models
I bought it at microcenter. 3 weeks and its broken. Supposedly it has poor vrms. Only overclocked it slightly. Not sure what broke the mobo, and i'm outside the 15 day return policy. Asrock has very unclear rma directions. I bought an msi b350m mortar and computer is up and running again.Edit - rma is underway. Will likely use board for a budget build in future. I recommend not listening to youtube and recklessly overclocking. Will likely get 1600x instead next time.
I really like this micro motherboard
I really like this micro motherboard. In the past i?€™ve only used asus or gigabyte but thought i?€™d try this one for a new am4 build and i haven?€™t been disappointed with the result. It?€™s easy to overclock, very stable and the build quality is excellent. They even managed at this price point to throw in an additional ultra m.2 slot, a surprising two-thumbs-up feature.I?€™ve as well noticed during the month or so that i?€™ve been up and running, asrock is very good about providing bios and driver updates on their website which is important for a new platform launch.Unless things change, i won?€™t hesitate to use asrock again. I truly dig this board.
By Otto Huotari
Great mobo for the money and i got ballistix sport ...
Great mobo for the money and i got ballistix sport lt 2666 ram and worked out of the box. I was realyy worried i would run into an issue but it we as it should
Shipping is terrible
Beautiful motherboard, but the box had heavy damage, but the components inside are still intact. Hopefully it still works.
Great value for a single gpu small form factor build
Solid construction. Great value for a single gpu small form factor build. Am4 for $60?? I mean come on..Would recommend.Taking one star for the reasons below.I was still able to oc my ryzen 1400 to 3.95ghz with the stock heatsink...But..Ufei does not support advanced oc'ing. Not able to adjust some important llc values as you can on the x370 boards. You can adjust the multiplier and vcore and vddc and a few other basic things but the advanced hexidecimal adjustments are locked.
By Asuncion Blanco
This has become my favorite am4 motherboard.
I have installed three of these boards. Updated to latest bios. Have ran ryzen 3 1300x, 5-1400, and 5 -1600 cpu's with no issues.All overclocked to 3.8 ghz, but i run them at 3.7ghz. With no issues.Windows 10 installed on all three. Graphics cards have been geforce 750ti and 1050 ti. 400-550watt powersupplies.
Worked great. A simple am4 motherboard that doesn't break the bank. Got it on sale for 59 and it's been great with my ryzen 1300x. No bios update was necessary


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AB350M Pro4

ASRock AB350M Pro4 AM4 AMD Promontory B350 SATA USB 3.1

Price: $84.87
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