MSI B550 Gaming WIFI , ATX - Supports AMD Ryzen 5000 Series, and 3000 Series Processors, AM4 - DDR4 , M.2 Gen4, 1G LAN
- • AMD B550 Platform: Socket AM4 support for compatible AMD Ryzen 5000, 4000 G-Series and 3000 Series desktop processors
- • DDR4 Memory: 4 DIMM slots, up to 128GB and up to DDR4-4866+ MHz via A-XMP OC Mode
- • PCIe & Storage: PCIe 4.0 x16, 2 M.2 slots and 6 SATA 6G ports
- • Networking: Realtek 8111H Gigabit LAN, Wi-Fi 5 and Bluetooth 5.0
- • Connectivity: Rear USB 10Gbps Type-A and Type-C plus front USB 5Gbps Type-C support
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- Availability:
- In Stock
- Product Code:
- B550 GAMING WIFI
- Brand:
- MSI
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The MSI B550 GAMING WIFI is an ATX motherboard based on the AMD B550 chipset and Socket AM4. It supports AMD Ryzen 5000 and 3000 Series desktop processors, excluding Ryzen 5 3400G and Ryzen 3 3200G, as well as Ryzen 4000 G-Series desktop processors. Four DDR4 DIMM slots support up to 128GB of memory.
The motherboard combines a CPU-connected PCIe 4.0 x16 slot with dual M.2 storage, six SATA 6G ports, Realtek Gigabit LAN, Wi-Fi 5 and Bluetooth 5.0. MSI also equips the board with a 10+2+1 Duet Rail Power System, Extended Heatsink Design, M.2 Shield Frozr, PCIe Steel Armor, Flash BIOS Button and EZ Debug LED.

Key Features
- AMD B550 Platform: Socket AM4 support for compatible AMD Ryzen 5000, 4000 G-Series and 3000 Series desktop processors.
- DDR4 Memory: Four DDR4 DIMM slots with up to 128GB capacity and A-XMP overclocking support up to 4866+ MHz.
- PCIe 4.0 Expansion: CPU-connected PCIe 4.0 x16 slot for high-bandwidth expansion.
- Dual M.2 Storage: One PCIe 4.0 x4/SATA M.2 slot and one PCIe 3.0 x4 M.2 slot, plus six SATA 6G ports.
- Integrated Networking: Realtek 8111H Gigabit LAN, Wi-Fi 5 and Bluetooth 5.0.
- USB Connectivity: Rear USB 10Gbps Type-A and Type-C plus front USB 5Gbps Type-C support.
Technical Specifications
| Component | Specification |
| Brand | MSI |
| Model | B550 GAMING WIFI |
| Chipset | AMD B550 |
| CPU Socket | AM4 |
| CPU Support | AMD Ryzen 5000 & 3000 Series desktop processors and Ryzen 4000 G-Series desktop processors |
| CPU Exclusions | Not compatible with AMD Ryzen 5 3400G or Ryzen 3 3200G |
| Power Design | 10+2+1 Duet Rail Power System, 55A DrMOS |
| CPU Power | 1 × 8-pin |
| Memory Type | DDR4 |
| Memory Slots | 4 × DDR4 DIMM |
| Maximum Memory | 128GB |
| Maximum Memory Speed | Up to DDR4-4866+ MHz via A-XMP OC Mode |
| Memory Architecture | Dual-Channel |
| Expansion Slots | 2 × PCIe x16, 1 × PCIe x1 |
| Primary PCIe Slot | PCIe 4.0 x16 from CPU |
| Additional PCIe Slots | PCIe 3.0 x4 and PCIe 3.0 x1 from chipset |
| M.2 Storage | 2 × M.2 |
| M.2_1 | PCIe 4.0 x4 / SATA, supports 2242 / 2260 / 2280 / 22110 devices |
| M.2_2 | PCIe 3.0 x4, supports 2280 devices |
| SATA | 6 × SATA 6G |
| Multi-GPU | AMD Multi-GPU Support |
| LAN | Realtek 8111H 1G LAN |
| Wi-Fi | Wi-Fi 5 |
| Bluetooth | Bluetooth 5.0 |
| Audio | Realtek ALC897, 7.1-Channel High Definition Audio |
| HDMI | HDMI 2.1, up to 4K 60Hz |
| DisplayPort | DisplayPort 1.2, up to 4K 60Hz |
| Rear USB 10Gbps | 1 × Type-A, 1 × Type-C |
| Rear USB 5Gbps | 2 × Type-A |
| Rear USB 2.0 | 4 |
| Front USB Support | 1 × USB 5Gbps Type-C, 2 × USB 5Gbps Type-A, 4 × USB 2.0 |
| Form Factor | ATX |
| Dimensions | 243.84 × 304.8 mm |
| Operating System | Windows 11 64-bit |
Compatibility & Important Information
- The motherboard uses Socket AM4 and supports AMD Ryzen 5000 and 3000 Series desktop processors, excluding Ryzen 5 3400G and Ryzen 3 3200G, plus Ryzen 4000 G-Series desktop processors.
- The HDMI and DisplayPort motherboard video outputs are available only when using a processor featuring integrated graphics.
- Memory compatibility and supported speeds vary according to the installed processor, memory modules and DIMM configuration.
- M.2_1 supports PCIe 4.0 x4 and SATA storage devices, while M.2_2 supports PCIe 3.0 x4 devices.
- This motherboard uses DDR4 memory and is not compatible with DDR5 DIMMs.
- The primary expansion slot is PCIe 4.0 x16, while the additional expansion slots operate through the B550 chipset at PCIe 3.0.
| Product Specifications | |
|---|---|
| Manufacturers Link | https://www.msi.com/Motherboard/B550-GAMING-WIFI/Specification |
| Motherboard Specifications | |
| CPU Support | AMD Ryzen IV & V Generation |
| CPU Socket Type | AM4 |
| Chipset | AMD B550 |
| Form Factor | ATX |
| Memory Type | DDR4 |
| Memory Speed | 4866 MHz |
| Maximum Memory | 128 GB |
| Memory Slots | 4 Slots |
| M.2 Slots | Yes |
| Wireless LAN | Yes |
| Warranty | |
| Warranty | 1 Year |
Q: Which processors are compatible with the MSI B550 GAMING WIFI?
A: MSI specifies support for AMD Ryzen 5000 and 3000 Series desktop processors and Ryzen 4000 G-Series desktop processors. Ryzen 5 3400G and Ryzen 3 3200G are specifically excluded.
Q: Does the MSI B550 GAMING WIFI use DDR4 or DDR5 memory?
A: It uses DDR4 memory. The motherboard has four DDR4 DIMM slots with a maximum capacity of 128GB.
Q: What is the maximum specified memory speed?
A: MSI lists DDR4 memory speeds up to 4866+ MHz through A-XMP OC Mode. Maximum supported speed varies according to the processor and memory configuration.
Q: Does the motherboard support PCIe 4.0?
A: Yes. MSI specifies a CPU-connected PCIe 4.0 x16 primary expansion slot.
Q: How many M.2 SSD slots are available?
A: There are two M.2 slots. M.2_1 supports up to PCIe 4.0 x4 or SATA devices, while M.2_2 supports up to PCIe 3.0 x4.
Q: Does the motherboard include Wi-Fi and Bluetooth?
A: Yes. MSI specifies Wi-Fi 5 and Bluetooth 5.0.
Q: What wired networking does the motherboard provide?
A: It uses a Realtek 8111H Gigabit LAN controller.
Q: Can the motherboard HDMI and DisplayPort outputs be used with any compatible processor?
A: No. MSI specifies that the onboard HDMI and DisplayPort outputs are available only when the installed processor features integrated graphics.
























