MSI B550 Gaming

Chipset
AMD B550

CPU
Supports AMD Ryzen™ 5000 & 3000 Series desktop processors (not compatible with AMD Ryzen™ 5 3400G & Ryzen™ 3 3200G) and AMD Ryzen™ 4000 G-Series desktop processors
Socket AM4

Memory
4x DDR4, Maximum Memory Capacity 128GB
Memory Support DDR4 2667/ 2800/ 2933/ 3000/ 3066/ 3200/ 3466/ 3600/ 3733/ 3866/ 4000/ 4133/ 4266/ 4400/ 4533/ 4600/ 4733/ 4800/ 4866+ MHz by A-XMP OC MODE
Max. overclocking frequency:
• 1DPC 1R Max speed up to 4800+ MHz
• 1DPC 2R Max speed up to 3866+ MHz
• 2DPC 1R Max speed up to 4000+ MHz
• 2DPC 2R Max speed up to 3600+ MHz

• Dual channel memory architecture
• Supports non-ECC UDIMM memory
• Supports ECC UDIMM memory (non-ECC mode)
• Supports un-buffered memory

• Memory compatibility and supported speeds can vary depending on the CPU and memory configuration. For detailed information, please refer to the Memory Compatibility List available on the product’s Support page or visit https://www.msi.com/support/.

Onboard Graphics
1x HDMI™
Support HDMI™ 1.4, maximum resolution of 4K 30Hz*
1x DisplayPort
Support DisplayPort 1.2, maximum resolution of 4K 60Hz*

*Available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed.

Slot
2x PCI-E x16 slot
1x PCI-E x1 slot
PCI_E1 Gen PCIe 4.0 supports up to x16 (From CPU)
PCI_E2 Gen PCIe 3.0 supports up to x4 (From Chipset)
PCI_E3 Gen PCIe 3.0 supports up to x1 (From Chipset)
*The supported specification depends on installed processor.
**When installing PCIe SSD in M.2_2 slot, PCI_E2 slot will be unavailable.

Audio
Realtek® ALC897
7.1-Channel High Definition Audio

Storage
2x M.2
M.2_1 Source (From CPU) supports up to PCIe 4.0 x4 / SATA mode, supports 22110/2280/2260/2242 devices
M.2_2 Source (From Chipset) supports up to PCIe 3.0 x4 , supports 2280/2260/2242 devices
6x SATA 6G

USB
4x USB 2.0 (Rear)
4x USB 2.0 (Front)
2x USB 5Gbps Type A (Rear)
2x USB 5Gbps Type A (Front)
1x USB 5Gbps Type C (Front)
1x USB 10Gbps Type A (Rear)
1x USB 10Gbps Type C (Rear)

LAN
Realtek® 8111H 1G LAN

Internal IO
1x Power Connector(ATX_PWR)
1x Power Connector(CPU_PWR)
1x CPU Fan
1x Combo Fan (Pump_Sys Fan)
6x System Fan
2x Front Panel (JFP)
1x Chassis Intrusion (JCI)
1x Front Audio (JAUD)
1x Com Port (JCOM)
2x Addressable V2 RGB LED connector (JARGB_V2)
1x RGB LED connector(JRGB)
1x TPM pin header(Support TPM 2.0)
4x USB 2.0 ports
2x USB 5Gbps Type A ports
1x USB 5Gbps Type C ports

LED FEATURE
4x EZ Debug LED

BACK PANEL PORTS
 USB 2.0
DisplayPort 1.2
1G LAN
USB 10Gbps (Type-A)
Audio Connectors
Flash BIOS Button
HDMI™
USB 2.0
USB 5Gbps (Type-A)
USB 10Gbps (Type-C)

OPERATING SYSTEM
Support for Windows® 11 64-bit 

PCB Info
ATX
243.84mmx304.8mm