Overview
The MSI B550-A PRO is an ATX motherboard designed for compatible AMD Ryzen desktop processors. Built on the AMD B550 chipset, it offers DDR4 memory support, PCIe expansion, dual M.2 storage slots, and multiple USB connectivity options for desktop workstations, productivity systems, and custom PC builds.
Key Features
- AMD B550 chipset with AM4 processor socket
- Supports compatible AMD Ryzen 3000 and 5000 Series desktop processors and Ryzen 4000 G-Series processors
- Four DDR4 memory slots supporting up to 128GB
- Memory speeds up to 4400+ MHz with supported overclocking configurations
- Two M.2 slots for compatible SSDs
- Six SATA 6Gb/s storage connections
- PCIe 4.0 support with compatible processors
- HDMI and DisplayPort outputs for compatible processors with integrated graphics
- Realtek Gigabit Ethernet and 7.1-channel HD audio
- Flash BIOS Button for convenient BIOS updating
Specifications
| Brand | MSI |
| Model | B550-A PRO |
| MPN | B550-A PRO |
| Product Type | Desktop Motherboard |
| Manufacturer | MSI |
| Chipset | AMD B550 |
| CPU Socket | AM4 |
| Form Factor | ATX |
| Memory Type | DDR4 |
| Memory Slots | 4 |
| Maximum Memory | 128GB |
| M.2 Slots | 2 |
| SATA Ports | 6 x SATA 6Gb/s |
| Networking | Realtek Gigabit LAN |
| Audio | 7.1-channel HD Audio |
| Video Outputs | HDMI and DisplayPort; functionality depends on the installed processor |
| Motherboard Dimensions | 12 x 9.6 inches (30.5 x 24.4 cm) |
Compatibility and Installation
Before purchasing, verify that your processor is supported by the motherboard and its installed BIOS version. Select a compatible AM4 processor, DDR4 memory, storage devices, and an appropriate ATX-compatible computer case. Processor-dependent features and maximum memory speeds can vary by configuration.
Why Choose DC Supplies?
DC Supplies provides product information to help customers identify suitable computer components for their systems. Please verify model compatibility and current availability before ordering.
Frequently Asked Questions
1. Which processor socket does the MSI B550-A PRO use?
It uses the AMD AM4 socket and supports compatible AMD Ryzen desktop processors.
2. How much memory does this motherboard support?
It has four DDR4 memory slots and supports up to 128GB of memory.
3. Does the motherboard support M.2 SSDs?
Yes. It has two M.2 slots supporting compatible storage devices, with supported interfaces depending on the slot and processor.
4. Does it support PCIe 4.0?
Yes, PCIe 4.0 support is available for compatible processors and expansion devices.
5. Can I use HDMI or DisplayPort for video?
The motherboard provides HDMI and DisplayPort outputs, but onboard video output requires a compatible processor with integrated graphics.
6. Where can I find the official specifications?
Visit the official MSI B550-A PRO specifications page for detailed compatibility and technical information.
