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ASRock B450 Pro4 AMD Socket AM4 Motherboard

CCL Code: MBD2470
Manufacturer Code: 90-MXB8B0-A0UAYZ
Manufacturer: ASRock
ASRock B450 Pro4 AMD Socket AM4 Motherboard

Key Features:

  • Socket AM4
  • AMD B450 Chipset
  • 6 x SATA & 8 x USB Ports
  • DDR4 (max 64GB, 4 slots)
  • VGA, HDMI and Display Port
  • ATX Form Factor

Delivery Options

Tomorrow via Priority DPD

Free Delivery by Monday 2nd November

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Collection Options

Today from CCL (BD11 2PS)

Tomorrow from Local Collection Point


inc VAT

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AMD StoreMI Technology

A powerful tool that combines the speed of your SSD with the capacity of your hard disk into a single, fast, easy-to-manage drive. SSDs are fast, but expensive, and offer minimal capacity. Mechanical hard drives boast large capacity for a low price, but are much slower than an SSD. AMD StoreMI technology “combines” these two types of storage into a single drive and automatically moves the data you access the most to the SSD, so you get the best of both worlds: SSD responsiveness, and mechanical hard disk capacity. You can also use up to 2GB of RAM as a last-level cache for ultra-fast data.

*AMD StoreMI software is only free with 400-series chipset based motherboards.

Dual M.2 For SSD

Equipped with M.2 slot that supports both SATA3 6Gb/s and 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.

Dual USB 3.1 Gen2 (Type-A + Type-C)

This motherboard has a pair of onboard Type-A and Type-C USB 3.1 Gen2 ports built on the rear i/o for supporting next generation USB 3.1 Gen2 devices and to deliver up to 10 Gbps data transfer rates.

2oz Copper

It comes with 2 ounces copper inner layers, using only carefully selected copper materials for PCB layers, delivering lower temperature and higher energy efficiency for overclocking.

Super Alloy Motherboard

Premium Power Choke

Compared to traditional chokes, ASRock’s premium power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard.

Sapphire Black PCB

Pure black PCB appearance. The new Sapphire Black PCB represents rock-solid quality and gives the motherboard a more mysterious touch.

2oz Copper PCB

Using only carefully selected copper materials for PCB layers, 2oz Copper PCB delivers lower temperature and higher energy efficiency for overclocking.

3 Graphics Outputs

Complete with all three types of most used connectors! Packed with a D-Sub + DisplayPort + HDMI combo. Plus the HDMI port supports 4K resolution.

*Supported with A-Series APUs only.

Triple Monitor

Graphics, graphics and even more graphics! You've demanded for more eye candy, so this motherboard supports Triple Monitor. You may choose up to three display interfaces from the rear i/o to connect monitors and use them simultaneously without installing another graphics card.

*Supported with processors with integrated graphics only.

Solid Capacitor Design

ASRock applied solid capacitors on this motherboard. With these solid caps, this motherboard is allowed to perform more stably and ensure longer lifetime.

ELNA Audio Caps

Who says high quality audio is only available on high-end motherboards? ASRock applied ELNA audio capacitors on mainstream and entry-level motherboards! Compared with traditional solid caps, the leakage current of ELNA audio caps is merely 3uA. This is the key to reduce noise level significantly and satisfy even the pickiest audiophiles.

Digi Power

Unlike traditional motherboards that use analog power, this motherboard uses a next generation digital PWM (Pulse-Width Modulation) design, which provides CPU Vcore voltage more efficiently and smoothly, so that the stability and lifespan of the motherboard is greatly enhanced.


A-Tuning is ASRock's multi purpose software suite with a new interface, more new features and improved utilities.

Full Spike Protection

Some sensitive digital components on the motherboard are vulnerable to power surges, the excessive current may cause your system to malfunction immediately. ASRock Full Spike Protection includes various technologies to prevent your motherboard’s components from being damaged by these unexpected voltage spikes.

Live Update & APP Shop

ASRock Live Update & APP Shop is designed for your convenience. We provide various apps and support software for users to download. You can also easily optimize your system and keep your motherboard up to date with ASRock Live Update & APP Shop.

Main Features

  • AMD AM4 Socket
  • Supports DDR4 3200+ (OC)
  • 2 PCIe 3.0 x16, 4 PCIe 2.0 x1
  • AMD Quad CrossFireX™
  • Graphics Output: HDMI, Display Port, D-Sub
  • 7.1 CH HD Audio (Realtek ALC892 Audio Codec), ELNA Audio Caps
  • 6 SATA3, 1 Ultra M.2 (PCIe Gen3 x4), 1 M.2 (PCIe Gen3 x2 & SATA3)
  • 2 USB 3.1 Gen2 (Rear Type A+C)
  • 6 USB 3.1 (2 Front, 4 Rear)
  • Realtek Gigabit LAN


CPU Socket Socket AM4
Installed Processors (Max) 0 (1)
Supported Processor Manufacturer AMD
Supported Processors Ryzen 2nd Generation
Ryzen 1st Generation
Ryzen with Vega graphics
64-bit Support Yes
Socket AM4

Rear Panel I/O Ports

USB Ports 1 x USB 3.1 Type-C
1 x USB 3.1 Type-A
4 x USB 3.0
2 x USB 2.0
DisplayPorts 1 x DisplayPort 1.2
HDMI Port 1 x HDMI
VGA Port 1 x D-Sib
Keyboard/Mouse Combo Port 1 x PS/2
RJ-45 Ports 1 x RJ-45
Audio Line In Ports 1 x 3.5mm Jack
Audio Line Out Ports 1 x 3.5mm Jack
Microphone In Port 1 x 3.5mm Jack

Internal I/O Connectors

SATA Connectors 6 x SATA III
USB Connectors 1 x USB 3.0
2 x USB 2.0
Speaker 1 x Speaker
Front Panel Connectors 1 x Front Panel
1 x Front Audio
Cooling Fan Support 1 x CPU fan
1 x CPU/Water Pump fan
3 x Chassis/Water Pump fans
Serial Connectors 1 x COM
TPM Header 1 x TPM
Power Connector Port 1 x 20+4-pin ATX
1 x 4+4-pin ATX12V
Other Connectors 1 x M.2, M Key (Type 2242/2260/2280)
1 x M.2, M Key (Type 2242/2260/2280/22110)
1 x RGB LED header
1 x Addressable LED header
1 x AMD Fan LED header


Memory Bus Speed 3200+(OC) / 2933 / 2667 / 2400 / 2133 MHz
Memory Type DDR4
Maximum RAM 64 GB
Memory Slot 4 x DIMM


Chipset Manufacturer AMD
Northbridge B450
RAID Supported Yes
RAID Format RAID 0, 1, 10
SATA Supported Yes


Number of PCI Express Slots 2 x PCI Express 3.0 x16
4 x PCI Express 2.0 x1

Graphics Device

Integrated Graphics Supported Yes


Integrated Sound Realtek ALC892


Integrated Network Realtek RTL8111H
Network Speeds Supported 10/100/1000 Mbps
Wireless LAN No
Bluetooth No

System Requirements

Operating Systems Supported Microsoft Windows 10 64-bit


Software Included (may be trial or restricted) Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar
Drivers Included
SLi/Crossfire Features Supports AMD Quad CrossFireX™ and CrossFire™


Form Factor ATX Motherboard
In The Box Motherboard
Quick Installation Guide
Support CD
I/O Shield
2 x SATA Cables
2 x M.2 Screws
Width 305 mm
Length 224 mm

Key Features

Firewire No
Wireless Network No
Memory Channel Dual
On-board Audio Type 7.1
Number of SATA Ports 6 port(s)
Number of USB Ports 8 port(s)
SATA III Support Yes
USB 3.0 Support Yes
Multi GPU Support ATi CrossFire
VGA Connection Yes
DVI Connection No
HDMI Connection Yes
DisplayPort Connection Yes
Motherboard Form Factor ATX
Motherboard Power Connectors 4 + 4-Pin
Motherboard Chipset AMD B450
Thunderbolt No
USB 3.1 Support Yes
Internal USB3.0 Header Yes
M.2 Support Yes
On-board RGB Control None
Skip Audio Test No
RGB Header Type None
Addressable RGB No


Warranty 1 Year

Item Details

Manufacturer ASRock
Manufacturer Code 90-MXB8B0-A0UAYZ
EAN 4717677336252
Condition New

Warranty Information

Warranty 1 Year

Manufacturer Information

Manufacturer ASRock
Manufacturer Code 90-MXB8B0-A0UAYZ

Do you have you a question about the ASRock B450 Pro4 AMD Socket AM4 B450 Chipset ATX Motherboard?

Q: Will this board support HyperX Fury Bundle 16GB (2x 8GB) 3200MHz DDR4 RAM?
Answer by Website User on 28th September 2020
Yes it will. -MR
0 customers found this answer helpful.
Post Answer
Q: Can this board support the Ryzen 5 3600 out of the box without a bios flash?
Answer by Website User on 22nd September 2020
This supports 3rd gen Ryzen out of the box. -MR
1 customer found this answer helpful.
Post Answer
Q: does this board ship with ryzen 3000 series support and if not how can i update the motherboard?
Answer by Website User on 18th September 2020
This supports 3rd gen Ryzen out of the box. -MR
0 customers found this answer helpful.
Post Answer
Q: Is this board now shipped with appropriate bios to support Ryzen 3000 without bios flash?
Answer by Website User on 18th September 2020
Yes, it is. -MR
0 customers found this answer helpful.
Post Answer
Q: How would I get you to update the Bios for 3rd gen ryzen? Is there a submission form on checkout?
Answer by Website User on 10th June 2020
If you would like us to update the BIOS for you before dispatch you would need to add CCL Code: SER0007 to your order, which is £9.99 inc VAT. -MR
0 customers found this answer helpful.
Post Answer
Q: What's the best way to update the board's BIOS to work with Ryzen 3000?
Answer by Website User on 14th April 2020
We have a service available to do this before shipping (CCL Code SER0007). -MR
1 customer found this answer helpful.
Post Answer
Q: Will this board work with Ryzen 3000 series out of the box.
Answer by Website User on 12th February 2020
This will need a bios update to support ryzen 3000. - Kristian N
0 customers found this answer helpful.
Post Answer
Q: Can i put a ryzen 5 2600 without any bios update thanks
Answer by Website User on 5th September 2019
This board can run Ryzen 2 out of the box without any BIOS update
1 customer found this answer helpful.
Post Answer
Q: How many fan headers for chassis fans are there?
Answer by Website User on 22nd May 2020
3. Look in specifications
0 customers found this answer helpful.
Post Answer
4 / 5 23 reviews


4 weeks ago

Much cheaper than I have found on other websites shipping was very good. The motherboard is very upgradeable.


2 months ago

Fast delivery, fitted with no problems. Set up and running within an hour. Price was good. I would use this supplier again.

Martin Nelson

4 months ago

A great board for the price. The only real let down is that there's only one PCIe 16 slot, the other slot actually only runs PCIe x4. That said, it gives a good chance at upgrading in the future and expanding when you need to.

Matt Cheetham

5 months ago

The motherboard is excellent value for the money. While it does not have the best feature set that money can buy it has enough for normal use, it has good heatsinks over the VRMs, especially if you don't plan on overclocking and will now be compatible with 4000 series Ryzen CPUs. Considering that this boad design is the same as ASRock used for their F4tal1ity gaming motherboard, just with a inferior set of ports it is well worth buying if you don't want to break the bank for a feature rich B450 motherboard.

Joshua McK

5 months ago

Was able to pair this with a bios update to support 3rd gen Ryzen so product is great. Just had to be careful that it would be compatible with other processors


5 months ago

Really nice high quality board with 4 RAM slots which is great for future expansion to 32GB. Good fit and no flex when pushing in the RAM and M2 drive. Manual is not too clear for novices and incredibly small type face but the value for money and quality of this board makes it a 5 start product.


5 months ago

Quite underrated. It has everything I need child do with one more vram though lol


6 months ago

A very good value B450 motherboard. Lots of USB connectivity and a very easy to use UEFI/BIOS. Recommended for a good value Office/Home or a Mid Range Gaming PC.

George Glennie

7 months ago

Easy to fit and wire. Details and instructions spot on.


9 months ago

Good board, shame it couldnt handle the 3200mhz ram I put in it

Steve Kerr

August 2019

BIOS update required to get it to work stably with Linux. Features good though once working.

Ali Deghany

August 2019

Really great mobo, easy to build onto. Instruction manual was nice and clear to follow in regards to vRAM and other connection ports.


July 2019

gigabyte are my normal go to motherboards but i heard(buildzoid) this was amazing. and it is, i havent had an ASrock in years i was really impressed.


June 2019

Excellent value board for running a Ryzen CPU. No frills like RGB lights and other extras but good quality hardware and capable of overclocking.

James McCallum

June 2019

Works well and as expected


June 2019

Motherboard worked perfectly with the Ryzen 2200G, there were no RAM compatibility issues whatsoever. Haven't tried any overclocking as the machine wasn't built as a games machine. Decent placement of SATA and PWM headers. Nothing bad to say about it really.


May 2019

Very good motherboard. Good heatsink and full functionality for cheap price.


April 2019

Good motherboard for ryzen 2600x very easy to get stable 4.2ghz all core overclock and let my ram timings drop to cl15 with ease

Mark Farmer

March 2019

Great mobo for the price. Best value mid-range board in my opinion. Some good features for the price, 2 M.2 slots, USB C and four ram slots.


February 2019

Perfect for my build at a reasonable price. However not 5 stars as the memory slots only clip at one end resulting in the possibility of incorrectly seated ram. Also PC speaker was disabled by default in bios so took a while to work out what the problem was when the PC started but kept resetting without passing POST.


February 2019

Great little budget board and will definatley be more than enough for the average gamer. Came as expected and very pleased with the purchase!

J F Yorkshire

January 2019

Easy to install and set up a very modern motherboard with lots of expansion and features


November 2018

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