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MSI

MSI B550-A PRO

MB, B550, 4x DDR4, 1x PCIE4.0 x16, 1x PCIE3.0 x16, 6x SATA3, 2x M.2, 7x USB

MPNB550-A PROOtherUpdated

Key facts

Part number
B550-A PRO
Brand
MSI
Category
Other
Price
AUD 233.20≈ USD 163 RRP
Availability
On request — ask for a quote

The MSI B550-A PRO is an other listed in the Prology Parts Index. RRP AUD 233.20≈ USD 163 (Oct 2026). Request a quote for volume pricing, or sell us your used others.

Overview

B550-A PRO MB, B550, 4x DDR4, 1x PCIE4.0 x16, 1x PCIE3.0 x16, 6x SATA3, 2x M.2, 7x USB 3.2, DisplayPort, HDMI, ATX

PRO SERIES

PRO series helps users work smarter by delivering an efficient and productive experience. Featuring stable functionality and high-quality assembly, PRO series motherboards provide not only optimized professional workflows but also less troubleshooting and longevity.

  • DisplayPort transmits both audio and video signals through a common channel to deliver versatile performance
  • Retrieve a significant number of PCI slots, expansion slots, and peripheral ports that have an enhanced heat dissipation capability with the ATX desktop motherboard
  • HDMI interface enables the user to experience a fantastic sound/video quality at the expense of a single cable
  • DDR4 SDRAM compatible slot - Install memory that synchronizes electrical and clock signals for an efficient data throughput
  • RAID supported levels provide data reliability and fault tolerance
  • 4 USB 2.0 ports offer the impressive data transfer speed of up to 60 Mb/sec
  • Compatible Ryzen 3 processor lets you perform all your computational tasks at a swift pace

Specifications

General

Audio Channels
7.1
Gigabit Ethernet
Yes
Onboard Video
CPU Dependent Video
Controller Type
Serial ATA/600
RAID Supported
Yes
Form Factor
ATX
Width
304.8 mm
Depth
243.8 mm
Number of PCI Express x1 Slots
2
Number of PCI Express x16 Slots
2
Total Number of PCI Express Slots
4
Total Number of Expansion Slots
4.0
Maximum Memory Supported
128 GB
Number of Memory Slots
4
Memory Form Factor
UDIMM

DIMM

Number of SATA Interfaces
6
Total Number of Onboard USB Ports
7
Number of Onboard USB 2.0 Ports
4
Number of M.2 Interfaces
2
Number of Onboard USB 3.2 Ports
3
HDMI
Yes
Number of Network (RJ-45) Ports
1
DisplayPort
Yes
Total Number of USB Ports
8
Number of USB 2.0 Ports
4
Number of USB 3.2 Ports
4
Processor Supported
Ryzen 9

Ryzen 3

Total Processor Supported
1
Chipset Manufacturer
AMD
Multi GPU Supported
CrossFire
Product Type
Desktop Motherboard

Manufacturer Website Address

Manufacturer
MSI
Product Model
B550-A PRO
Product Name
B550-A PRO Desktop Motherboard
Product Series
PRO
Brand Name
MSI

Price history

Latest
AUD 233.20≈ USD 163
Oct 2026
Lowest recorded
AUD 233.20≈ USD 163
Highest recorded
AUD 233.20≈ USD 163
Recorded
2026
1 price point

AUD 233.20 rrp, recorded

Why buy from Prology

  • Tested before dispatchEvery item is checked by our technicians before it ships.
  • Warranty includedParts are covered by a Prology warranty – ask us for the terms.
  • Fast shippingDispatched from our Australian and US locations.
  • Real people, quick repliesQuotes and answers within 1 business day.

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More MSI Other

All MSI parts starting with “B” · All MSI part numbers

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Prology buys used and surplus others – including B550-A PRO. Sell outright or trade in against your next order. Offer within 1 business day.