Four DDR4 slots let you start with two memory modules and add more later as your workload grows. The two M.2 slots take compact SSDs that mount directly on the board, so you can keep your system and your games or project files on separate drives without running extra cables through the case.
Built-in Wi-Fi means you can get online wherever your desk happens to be, with no need for a separate adapter or a long network cable. The standard ATX format fits a wide range of mid-tower and full-tower cases.
This motherboard suits anyone building or upgrading an AM4 desktop, from home office and study machines to gaming rigs and content creation workstations.
| Brand | MSI |
|---|---|
| BIOS type | UEFI AMI |
| ACPI version | 6.0 |
| Bullet Points | <ul><li>Supports AMD Ryzen™ 5000 Series, 5000 G-Series, 4000 G-Series, and 3000 Series processors</li><li>Supports DDR4 Memory, up to 4800+ MT/s (OC)</li><li>Lightning Fast Experience: PCIe 4.0 slot and Lightning Gen4 x4 M.2</li><li>EZ DIY: EZ Debug LED and EZ Mounting</li><li>Wi-Fi 6E Solution: the ideal solution for professional and multimedia use, delivering secure, stable, and high-speed networking and data transmission</li><li>Audio Boost: Reward your ears with studio-grade sound quality</li><li>MSI Center: A brand-new software which integrates all MSI exclusive tools with user-friendly user interface</li></ul> |
| Component for | PC |
| BIOS memory size | 256 |
| Long Description | MSI PRO B550-S WIFI6E. Processor manufacturer: AMD, Processor socket: Socket AM4, Compatible processor series: AMD Ryzen 3000 Series, AMD Ryzen 4000 Series, AMD Ryzen 5000 Series. Supported memory types: DDR4-SDRAM, Maximum internal memory: 128 GB, Memory slots type: DIMM. Supported storage drive interfaces: M.2, Micro SATA III, Supported storage drive types: HDD & SSD, RAID levels: 0, 1, 10. Maximum resolution: 3840 x 2160 pixels. Ethernet interface type: Gigabit Ethernet, LAN controller: Realtek RTL8111H, Top Wi-Fi standard: Wi-Fi 6E (802.11ax) |
| Unbuffered memory | Yes |
| ECC сompatibility | Non-ECC |
| RGB LED pin header | Yes |
| PC health monitoring | CPU/Temperature |
| Number of memory slots | 4 |
| Motherboard form factor | ATX |
| Number of M.2 (M) slots | 2 |
| 1st M.2 largest key size | 22110 |
| 2nd M.2 largest key size | 2280 |
| PCI Express x1 (Gen 3.x) slots | 1 |
| PCI Express x16 (Gen 3.x) slots | 1 |
| PCI Express x16 (Gen 4.x) slots | 1 |
| 1st M.2 highest PCI Express generation | 4.0 |
| 2nd M.2 highest PCI Express generation | 3.0 |
| System Management BIOS (SMBIOS) version | 2.8 |
| Maximum resolution | 3840 x 2160 |
|---|
| Processor manufacturer | AMD |
|---|---|
| Motherboard chipset | AMD B550 |
| Processor socket | Socket AM4 |
| CPU fan connector | Yes |
| Motherboard chipset family | AMD |
| Compatible processor series | AMD Ryzen 3000 Series/AMD Ryzen 4000 Series/AMD Ryzen 5000 Series |
| Supported processor sockets | Socket AM4 |
| Number of CPU fan connectors | 1 |
| Maximum internal memory | 128 GB |
|---|---|
| Memory channels | Dual-channel |
| Memory slots type | DIMM |
| Number of HDDs supported | 4 |
|---|---|
| Supported storage drive types | HDD & SSD |
| Number of storage drives supported | 6 |
| Supported storage drive interfaces | M.2, Micro SATA III |
| On-board graphics card | Yes |
|---|
| Audio chip | Realtek ALC897 |
|---|---|
| Audio output channels | 7.1 |
| Front panel audio connector | Yes |
| HDMI ports quantity | 1 |
|---|---|
| HDMI version | 1.4 |
| USB 2.0 ports quantity | 4 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 1 |
| Ethernet LAN | Yes |
| Ethernet LAN (RJ-45) ports | 1 |
| TPM connector | Yes |
| LAN controller | Realtek RTL8111H |
| USB 2.0 connectors | 4 |
| 12V power connector | Yes |
| Front panel connector | Yes |
| Ethernet interface type | Gigabit Ethernet |
| ATX Power connector (24-pin) | Yes |
| Number of SATA III connectors | 4 |
| Total number of SATA connectors | 4 |
| Number of chassis fan connectors | 4 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| USB 3.2 Gen 2 (3.1 Gen 2) connectors | 1 |
| Wi-Fi | Yes |
|---|---|
| Wi-Fi standards | 802.11a/802.11b/802.11g/Wi-Fi 4 (802.11n)/Wi-Fi 5 (802.11ac)/Wi-Fi 6 (802.11ax) |
| Top Wi-Fi standard | Wi-Fi 6E (802.11ax) |
| Bluetooth | Yes |
| Bluetooth version | 5.3 |
| Windows operating systems supported | Windows 10/Windows 11 |
|---|
| Power source type | ATX |
|---|
| RAID levels | 0/1/10 |
|---|---|
| Supported memory clock speeds | 2667/2800/2933/3000/3066/3200/3466/3600/3733/3866/4000/4133/4266/4400/4533/4600/4733/4800/4866 |
| Supported memory clock speed (max) | 4866 |
| RAID support | Yes |
|---|---|
| Supported memory types | DDR4-SDRAM |
| Parallel processing technology support | Not supported |
| Width | 243.84 mm |
|---|---|
| Depth | 304.8 mm |
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