MSI B550-A PRO AMD B550 AM4 ATX Desktop Motherboard by MSI in Australia. Lowest price $115.19 at eBay, last checked 16 May 2026. Compared across 8 retailers on WhatsCheap.






















- Product
- MSI B550-A PRO AMD B550 AM4 ATX Desktop Motherboard
- Brand
- MSI
- Category
- Motherboards
- Country
- Australia
- Lowest price (AUD)
- 115.19
- Retailer
- eBay
- Price checked
- 16 May 2026
Up to 72% OFF

MSI B550-A PRO AMD B550 AM4 ATX Desktop Motherboard
by MSI
4.7(1K)
Best Price
$115.19$414.70
at eBay · checked 16 May 2026
ATX Form Factor, AMD B550 Chipset, Socket AM4, 4 x Dual-Channel DDR4-4400 (OC), 6 x SATA III, 2 x M.2, 1 x PCIe 4.0 x16, 1 x PCIe 3.0 x16 Slots, 2 x PCIe 3.0 x1 Slots, 7.1-Channel HD Audio, Realtek RTL8111H Gigabit LAN. Focus on business programs and optimize your workflow with the B550-A PRO ATX Motherboard from MSI. Designed to streamline assembly time MSI allows you to focus on components that will enhance workload efficiency. The B550-A Pro is ideal for the DIY users who wish to replace older out-of-date motherboards or enjoy building from scratch. Based upon AMD B550 chipset architecture the B550-A Pro's AM4 socket allows you to install Ryzen 5000 3000 and Ryzen 4000 G-series processors. Four dual-channel memory slots allow you to take advantage of DDR4 memory modules with speeds up to 4400 MHz. You can connect several hard drives with six SATA III and two M.2 ports for enhanced program loading and increasing overall performance. Install graphics sound or networking cards with one PCIe 4.0 x16 one PCIe 3.0 x16 and two PCIe 3.0 x1 slots. An RJ45 port is also available for wired internet connectivity and with 7.1-channel high-definition audio you can experience a wide range of entertainment. This motherboard is only compatible with Windows 10 (64-bit) operating systems.
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Compare prices from 8 stores
eBay
Best Price
72%
$115.19
$414.70
eBay
Best Price
$115.19
$414.70
72%
AliExpress
68%
$133.99
$414.70
AliExpress
$133.99
$414.70
68%

Umart
62%
$159.00
$414.70

Umart
$159.00
$414.70
62%

MSY
62%
$159.00
$414.70

MSY
$159.00
$414.70
62%

PCByte AU
62%
$159.00
$414.70

PCByte AU
$159.00
$414.70
62%

Mwave Australia
52%
$199.00
$414.70

Mwave Australia
$199.00
$414.70
52%

PC Case Gear
52%
$199.00
$414.70

PC Case Gear
$199.00
$414.70
52%

Alibaba.com
-
$414.70

Alibaba.com
$414.70
-
| Specification | Value |
|---|---|
| CPU Manufacturer | AMD |
| Motherboard Socket Type | AM4 |
| Motherboard Chipset | AMD B550 |
| Motherboard Form Factor | ATX |
| Motherboard Model | B550-A PRO |
| Motherboard Series | ProSeries |
| Form Factor | ATX |
| Manufacturer | MSI |
| Socket Type | AM4 |
| CPU Compatibility | AMD Ryzen 3000 Series |
| Motherboard Compatibility | ATX |
| RAM Type | DDR4 SDRAM |
| RAM Maximum Capacity | 128 GB |
| RAM Speed | 2667 MHz |
| RAM Number of Slots | 4 |
| RAM ECC Support | No, Yes (operate in non-ECC mode) |
| Memory Type | DDR4 SDRAM |
| Max Memory Capacity | 128 GB |
| Memory Slots | 4 |
| Memory Speed | 2667 MHz |
| ECC Support | No, Yes (operate in non-ECC mode) |
| Memory Channel Support | Dual-channel |
| Expansion Slot Type | M.2, PCI Express x1, PCI Express x16 |
| Integrated Graphics | Yes (CPU Dependent Video) |
| GPU Type | Integrated (CPU required) |
| Output Resolution | 4096 x 2160 pixels |
| Multi Card Support | Yes (CrossFire) |
| Motherboard Power Connectors | 12V power connector |
| Power Connectors | 12V power connector |
| Display Output Type | DisplayPort, HDMI |
| Max Display Resolution | 4096 x 2160 pixels |
| Number Of Display Outputs | 1 (HDMI) |
| PCIe Slots | 4 (total) |
| Expansion M.2 Slots | 2 |
| Storage Type | M.2 |
| Storage Interface | Serial ATA/600 |
| Storage Form Factor | M.2 (2242/2260/2280/22110) |
| Storage M.2 Slots | 2 |
| Storage SATA Ports | 6 |
| Storage RAID Support | Yes |
| GPU Output Interface | DisplayPort, HDMI |
| GPU DisplayPort Ports | 1 |
| GPU HDMI Ports | 1 |
| Motherboard Storage M.2 Slots | 2 |
| Motherboard SATA Ports | 6 |
| Motherboard RAID Support | Yes |
| Supports Overclocking | Yes |
| Suitable For Gaming | Yes |
| Top Use Cases | Gaming |
| Typical Users | Professionals, Prosumers |
| Chipset Manufacturer | AMD |
| Chipset Model | B550 |
| Chipset Highlights | RAID support |
| Ports | DisplayPort, HDMI, USB 2.0 |
| USB | 4 (USB 2.0) |
| Ethernet Ports | 1 |
| SATA Ports | 6 |
| Wireless | No Wi-Fi |
| Bluetooth | No |
| Ethernet | Gigabit Ethernet |
| Interface | PCIe 4.0 |
| Other Ports | PS/2 |
| Infrared | No |
| Color | Black |
| Length | 12 in |
| Height | 65 mm |
| Width | 9.6 in |
| Lighting | RGB LED pin header, Mystic Light Extension pin header |
| Cooling Type | Extended Heatsink Design, M.2 Shield Frozr |
| Fan Headers | 6 (chassis fan connectors) |
| Motherboard Target Use Case | Professional workflows, Gaming |
| Audio Chipset | Realtek ALC892 |
| Onboard Audio | Yes |
| Audio Channels | 7.1 |
| Bios Highlights | Flash BIOS Button |
| Release Date | 2020-07-07 |
4.7
1,599 reviews
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Price Summary
Price Range
$115.19 - $414.70
Stores
8 stores
Maximum Savings
Up to 72% OFF
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