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MSI B450-A PRO MAX AMD Socket AM4 Motherboard

CCL Code: MBD2688
Manufacturer Code: B450-A PRO MAX
| Manufacturer: MSI

Key Features:

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

Delivery Options

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Free Delivery by Tuesday 5th October

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Was £86.15

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1 Flash BIOS Button
2 USB 2.0 & PS/2
4 HDMI & USB 3.2 Gen1
5 USB 3.2 (Gen2) Type A & LAN
6 Audio jacks
7 Heavy plated heatsink
Leading heatsinks design, for maximum cooling
8 DDR4 Boost
Optimized traces and isolated memory circuitry
9 Turbo M.2
Delivering Speeds Up to 32Gb/s using PCI-Express Gen3 x4
10 PCI-E Steel Armor
Protecting VGA cards against bending and EMI
11 Steel Slot
Protecting VGA cards against bending
12 Audio Boost
Reward your ears with studio grade sound quality.
MSI B450-A PRO MAX overview
Display Interface
VGA Port DVI-D Port HDMI Port
VGA Port DVI-D Port HDMI Port
MSI PRO Series motherboards support multi GPU technologies and have optimal PCI-E slot placement for the best thermal performance.
*works best with MSI graphics cards
Core Boost
Core Boost technology combines MSI’s premium layout and optimized power design which allows for faster and undistorted current delivery to the CPU at pin-point precision. Not only supporting multi-core CPU, also creating the perfect conditions for your CPU overclocking.
Unmatched Memory Performance
MSI motherboards are crammed with features to fuel your system's memory with more speed, higher overclockability and increased stability.
Memory Signal Purity MSI MSI caption Others MSI caption
DDR4 Boost performance
Best compatibility
Optimized traces and a fully isolated memory circuitry ensures perfect stability and performance, so you never have to worry about your system crashing during games.
Best compatibility chart
Extreme storage performance: Turbo M.2
Enjoy a blazing fast system boot up and insanely quick loading of applications and data. Delivering speeds up to 32Gb/s per device using Gen3 x4.
Performance NVM
MSI PCI Express Steel Armor slots are armed with more solder points on the motherboard for a stronger hold, preventing any damage due to heavy-weight graphics cards. Steel Armor also protects PCI Express signals against electromagnetic interference to provide a pure and reliable signal for the best performance, even when turning it up a notch.
MSI Super Charger USB ports charge any connected device faster. It delivers more power than regular USB ports to your smartphone, tablet, USB peripherals or other battery-powered gear.
Amplify your Game with Audio Boost
Like a dedicated sound card Audio Boost offers a HD audio processor, dedicated amplifier and high quality audio capacitors, all physically isolated from the rest of the motherboard circuitry to ensure the purest audio signal to locate enemies with pin-point accuracy.
Isolated Audio Line High-quality Audio capacitors
Isolated audio Line High-quality Audio Capacitors
Audio Boost Ohm graph

Main Features

  • Supports 1st, 2nd and 3rd Gen AMD Ryzen™ / Ryzen™ with Radeon™ Vega Graphics and 2nd Gen AMD Ryzen™ with Radeon™ Graphics / Athlon™ with Radeon™ Vega Graphics Desktop Processors for Socket AM4
  • Supports DDR4 Memory, up to 4133(OC) MHz
  • Turbo M.2: Running at PCI-E Gen3 x4 maximizes performance for NVMe based SSDs.
  • DDR4 Boost: Fully isolated, shielded and optimized DDR4 PCB design to give your DDR4 memory a performance boost.
  • Audio Boost: Reward your ears with studio grade sound quality.
  • Flash BIOS Button: Simply use a USB key to flash any BIOS within seconds, without installing a CPU, memory or graphics card.
  • Core Boost: With premium layout and fully digital power design to support more cores and provide better performance.
  • Multi-GPU: With Steel armor PCI-E slots. Supports 2-Way AMD Crossfire™
  • AMD Turbo USB 3.2 Gen2: Powered by AMD USB 3.2 Gen2 controller, Turbo USB ensures an uninterrupted connection with more stability and fastest USB speeds


CPU Socket Socket AM4
Installed Processors (Max) 0 (1)
Supported Processor Manufacturer AMD
Supported Processors 1st, 2nd and 3rd Gen AMD Ryzen™/ Ryzen™ with Radeon™ Vega Graphics/ 2nd Gen AMD RyzenT with RadeonT Graphics/ AthlonT with RadeonT Vega Graphics Desktop Processors
64-bit Support Yes
Socket AM4

Rear Panel I/O Ports

USB Ports 2 x USB 3.1
2 x USB 3.0
2 x USB 2.0
HDMI Port 1 x HDMI
VGA Port 1 x D-Sub
Keyboard/Mouse Combo Port 1 x PS/2
RJ-45 Ports 1 x RJ-45
Digital Port 1 x DVI-D
Audio Line In Ports 1 x 3.5mm Jack
Audio Line Out Ports 4 x 3.5mm Jacks
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
Front Panel Connectors 1 x Front Panel
1 x Front Audio
Cooling Fan Support 1 x CPU fan
1 x Water Pump fan
4 x System fans
Parallel Connectors 1 x Parallel
Serial Connectors 1 x COM
Chassis Intrusion Connector 1 x Chassis Intrusion
TPM Header 1 x TPM
Power Connector Port 1 x 20+4-pin ATX
1 x 4+4-pin EPS
Other Connectors 1 x M.2, Key M (Type 2242/2260/2280/22110)


Memory Bus Speed 2667/ 2800/ 2933/ 3000/ 3066/ 3200/ 3466/ 3733/ 3866/ 4000/ 4133 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 1 x PCI Express 3.0 x16
1 x PCI Express 2.0 x16 (@ x4)
4 x PCI Express 2.0 x1

Graphics Device

Integrated Graphics Supported Yes


Integrated Sound Realtek® ALC892


Integrated Network Realtek® 8111H
Network Speeds Supported 10/100/1000 Mbps
Wireless LAN No
Bluetooth No

System Requirements

Operating Systems Supported Microsoft Windows 10 64-bit


Jumpers 1 x Clear CMOS
SLi/Crossfire Features Supports 2-Way AMD® CrossFire™ Technology


Form Factor ATX Motherboard
In The Box Motherboard
Stand-off Notification
Quick Installation Guide
2 x SATA Cables
Driver Disc
I/O Shield
Warranty Card
Width 305 mm
Length 244 mm

Key Features

Addressable RGB No
Firewire No
Wireless Network No
Socket(s) AM4
Memory Channel Dual
On-board Audio Type 7.1
Number of SATA Ports 6 port(s)
Number of USB Ports 6 port(s)
SATA III Support Yes
USB 3.0 Support Yes
Multi GPU Support ATi CrossFire
VGA Connection Yes
DVI Connection Yes
HDMI Connection Yes
DisplayPort Connection No
Motherboard Form Factor ATX
Motherboard Power Connectors 8-Pin
Motherboard Chipset AMD B450
Thunderbolt No
Motherboard Model MSI B450-A PRO MAX
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


Warranty 1 Year

Item Details

Manufacturer MSI
Manufacturer Code B450-A PRO MAX
EAN 4719072665975
Condition New

Warranty Information

Warranty 1 Year

Manufacturer Information

Manufacturer MSI
Manufacturer Code B450-A PRO MAX
Questions and Answers

Do you have you a question about the MSI B450-A PRO MAX AMD Socket AM4 B450 Chipset ATX Motherboard?

Q: B450-A PRO MAX motherboard Does this board have built in tpm2 or do you have to buy the module
Answer by Website User on 22nd September 2021
The motherboard does not carry the TPM module these are built into the CPU from 2nd gen onwards. - Kristian N
0 customers found this answer helpful.
Post Answer
Q: will Vetroo V240 240mm Radiator Black Addressable RGB All-in-one AIO CPU Liquid Cooler or GameMax Ice Chill 240mm ARGB AiO CPU Liquid Cooler work with MSI B450-A PRO MAX AMD Socket AM4 Motherboard ? thanks
Answer by Kristian on 14th September 2021
These will work fine. - Kristian N
0 customers found this answer helpful.
Post Answer
Q: Does this support the amd a series?
Answer by Website User on 9th October 2020
No, it will not support the A-series. -MR
0 customers found this answer helpful.
Post Answer
Q: Is this the same motherboard as the B450M just ATX not Micro-Atx?
Answer by Website User on 9th October 2020
Essentially yes, just with the extra slots and ports a ATX board allows. -MR
0 customers found this answer helpful.
Post Answer
Q: Does this motherboard come with the latest BIOS installed to support the Ryzen 3000 series CPU's?
Answer by Website User on 29th April 2020
Yes, this supports 3rd Gen Ryzen processors out of the box. -MR
0 customers found this answer helpful.
Post Answer
4 / 5 7 reviews


8 months ago

No damage in delivery.

Stuart Cherry

September 2020

Excellent motherboard for the money. Was straightforward to install and worked with my Ryzen 5 3600 Processor straight out of the box.


August 2020

It does the job, it support what I need it to support and It is cheap. Can't complaint on this.

Mr Gareth Watson

July 2020

Easy BIOS upgrade and no problems with the fixing to the case.


July 2020

Great mother board you just need to update the bios to get it to work with a m.2 ssd. Very happy with it


June 2020

Does exactly what it says on the tin.


March 2020

great board for Ryzen CPU