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| SPECIFICATIONS | |
| Brand | MSI |
| Series | AMD B550 Motherboards |
| Model | MPG B550 GAMING PLUS |
| CPU | Supports AM4 Socket 3rd Gen AMD Ryzen Processors, and Future AMD Ryzen Processors with BIOS Update |
| Chipset | AMD B550 Chipset |
| Memory | 4x DDR4 Memory Slots, Support Up to 128GB |
| Supports DDR4 1866/ 2133/ 2400/ 2667/ 2800/ 2933/ 3000/ 3066/ 3200 MHz by JEDEC | |
| Supports DDR4 2667/ 2800/ 2933/ 3000/ 3066/ 3200/ 3466/ 3600/ 3733 / 3866/ 4000/ 4133/ 4266/ 4400 MHz by A-XMP OC MODE | |
| 1DPC 1R Max Speed 4400 MHZ | |
| 1DPC 2R Max Speed 3866 MHZ | |
| 2DPC 1R Max Speed 4000 MHZ | |
| 2DPC 2R Max Speed 3600 MHZ | |
| Dual Channel Memory Architecture | |
| Supports Non-ECC UDIMM Memory | |
| Supports ECC UDIMM Memory (Non-ECC Mode) | |
| Supports Un-Buffered Memory | |
| Expansion Slots | 1x PCIe 4.0/ 3.0 x16 Slot (PCI_E1) *1 |
| 1x PCIe 3.0 x16 Slot (PCI_E3), Supports x4 Speed *2 | |
| 2x PCIe 3.0 x1 Slots | |
| On-Board Graphics | 1x HDMI Port, Supports a Maximum Resolution of 4096x2160 @24Hz *3 |
| 1x DisplayPort, Supports a Maximum resolution of 4096x2160 @60Hz *3 | |
| Maximum Shared Memory of 16GB | |
| Multi-GPU | Supports 2-Way AMD CrossFire Technology |
| Storage | AMD B550 Chipset: |
| 6x SATA 6Gb/s Ports | |
| 2x M.2 Slots (Key M) | |
| M2_1 Slot (from AMD Processor) | |
| Supports PCIe 4.0/ 3.0 x4 *4 | |
| Supports SATA 6Gb/s | |
| Supports 2242/ 2260/ 2280/ 22110 Storage Devices | |
| M2_2 Slot (from AMD B550 Chipset) | |
| Supports PCIe 3.0x4 | |
| Supports 2242/ 2260/ 2280 Storage Devices | |
| RAID | Supports RAID 0, RAID 1 and RAID 10 for SATA Storage Devices |
| Supports RAID 0 and RAID 1 for M.2 NVMe Storage Devices | |
| USB | AMD B550 Chipset: |
| 3x USB 3.2 Gen 1 5Gbps Ports (1 Type-C Internal Connector, and 2 Ports are Available Through the Internal USB 3.2 Gen 1 5Gbps Connector) | |
| 8x USB 2.0 Ports (2 Type-A Ports on the Back Panel, 4 Ports Through the Internal USB 2.0 Connectors) | |
| AMD Processor: | |
| 2x USB 3.2 Gen 2 10Gbps Ports (1 Type-C Port and 1 Type-A Port on the Back Panel) | |
| 2x USB 3.2 Gen 1 5Gbps Type-A Ports on the Back Panel | |
| Audio | Realtek ALC892 Codec: |
| 7.1-Channel High Definition Audio | |
| Supports S/PDIF Output | |
| LAN | 1x Realtek 8111H LAN Controller |
| Internal Connectors | 1x 24-pin ATX Main Power Connector |
| 1x 8-pin ATX 12V Power Connector | |
| 6x SATA 6Gb/s Connectors | |
| 2x M.2 Slots (M-Key) | |
| 1x USB 3.2 Gen 1 5Gbps Type-C Port | |
| 1x USB 3.2 Gen 1 5Gbps Connector (Supports Additional 2 USB 3.2 Gen 1 5Gbps Ports) | |
| 2x USB 2.0 Connectors (Supports Additional 4 USB 2.0 Ports) | |
| 1x 4-pin CPU Fan Connector | |
| 1x 4-pin Water-Pump Fan Connector | |
| 6x 4-pin System Fan Connectors | |
| 1x Front Panel Audio Connector | |
| 2x System Panel Connectors | |
| 1x Chassis Intrusion Connector | |
| 1x 4-pin RGB LED Connector | |
| 2x 3-pin RAINBOW LED Connectors | |
| 1xTPM Module Connector | |
| 1x Clear CMOS Jumper | |
| Back Panel Ports | 1x PS/2 Combo Port |
| 1x DisplayPort | |
| 1x LAN Port | |
| 1x USB 3.2 Type-A Gen 2 (10Gbps) | |
| 5x HD Audio Connectors | |
| Flash BIOS Button | |
| 4x USB 2.0 Type-A | |
| 1x HDMI | |
| 1x USB 3.2 Type-A Gen 1 (5Gbps) | |
| USB 3.2 Type-C Gen 2 (10Gbps) | |
| Optical S/PDIF OUT | |
| LED Features | 1x EZ LED Control Switch |
| 4x EZ Debug LED | |
| I/O Controller | NUVOTON NCT6687-R Controller Chip |
| Hardware Monitor | CPU/ System/ Chipset Temperature Detection |
| CPU/ System/ Pump Fan Speed Detection & Control | |
| Form Factor | ATX Form Factor |
| 12 in. x 9.6 in. (30.4 cm x 24.4 cm) | |
| Mounting Holes | 9x Mounting Holes |
| Warranty Information | |
| Warranty | 3 Year Warranty |
| Manufacturer's Site | Visit the manufacturer's website |
|---|---|
| Product Link | Visit the manufacturer's page for this product |
- MSI MPG B550 GAMING PLUS MOTHERBOARD - Tumelo, 12 September 2025
very impress and happy with the motherboard but I was little disappointed that the DVD Disc for drivers was not included or was missing but no worries i went to the MSI website and lucky enough they have the latest drivers so I did manage to download them and the booklet was also missing inside the box but so far i'm happy.
- Just Perfect - Devon, 3 September 2025
Layout still holds up with newer fish tank style cases and so far everything runs smooth and cool, The RGB is not as bright as I though it would be and gets drowned out very easily by other RGB elements but thats a minor
- Great replacement Mottherboard - Charles, 10 June 2024
My previous motherboard's USB ports got damaged and I needed a replacement my board, but did not want to upgrade my CPU. This is an excellent motherboard, and I have no complaints so far. It runs multiple port and the USB 3.2 is super fast.
- Money for value - Alex, 3 June 2024
brilliant board must say price is perfect looks good and runs like it should with the AMD 100-100001503WOF Ryzen 7 5700X3D 8-Core 4.1GHz Socket AM4 and 32gigs ram and a rtx3060 works amazing for my streams
- Easy - Oscar, 9 November 2021
Runs wells with 5700G + 16GB 3200 RAM.
Also really nice that BIOS flash does not require CPU. - out the box - Marcel, 9 December 2020
The Mechanics that were implemented into the motherboard when Flashing the BIOS without a CPU is a nice feature when purchasing AMD's 5000 series CPU. Made installing CPU less of a hassle. Motherboard heat-sinks are good quality. Dragon Center application helps with the RGB on the board and can control the DRAM RGB as well. There are enough Fan headers for your case fans. M.2 slot delivers faster load times. Gaming feels a bit different with the MSI lightning Gen 4 PCI-E.
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