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CPU
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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
* See supported processors
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Chipset
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AMD® B550 Chipset
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Memory
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4x DDR4 memory slots, supporting 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 3733 MHz
2DPC 1R max speed 3866 MHz
2DPC 2R max speed 3466 MHz
Dual channel memory architecture
Supports non-ECC UDIMM memory
Supports ECC UDIMM memory (non-ECC mode)
Supports un-buffered memory
* Please refer www.msi.com for more information on compatible memory.
* See supported memory
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Expansion slot
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1x PCIe 3.0 x16 slot (From CPU)
2x PCIe 3.0 x1 slots (From AMD B550 chipset)
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Onboard graphics
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1x VGA port, supports a maximum resolution of 2048x1536 @50Hz, 2048x1280 @60Hz, 1920x1200 @60Hz
1x HDMI™ 1.4 port, supporting a maximum resolution of 4096x2160 @30Hz, 2560x1600 @60Hz
1x DVI-D port, supports a maximum resolution of 1920x1200 @60Hz
Maximum shared memory of 16 GB
* Available only on processors featuring integrated graphics.
* Graphics specifications may vary depending on the CPU installed.
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SATA ports
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4x SATA 6Gb/s ports (From AMD B550 Chipset)
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M.2 SSD slots
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1x M.2 slot (Key M)
M2_1 slot (From CPU)
Supports PCIe 3.0 x4
Supports SATA 6Gb/s
Supports 2242/ 2260/ 2280 storage devices
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RAID
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Supports RAID 0, RAID 1, and RAID 10 for SATA storage devices
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Audio
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Realtek® ALC897 Codec
7.1-Channel High Definition Audio
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LAN
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1x Realtek® RTL8111H 1Gbps LAN controller
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Power connectors
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1x 24-pin ATX main power connector
1x 8-pin ATX 12V power connector
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Internal USB connectors
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1x USB 3.2 Gen 1 5Gbps connectors (From AMD B550 Chipset)
Supports additional 2 USB 3.2 Gen 1 5Gbps ports
2x USB 2.0 Type-A connectors (From AMD B550 Chipset)
Supports additional 4 USB 2.0 ports
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Fan connectors
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1x 4-pin CPU fan connector
2x 4-pin system fan connectors
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System connectors
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1x Front panel audio connector
2x System panel connectors
1x Chassis Intrusion connector
1x Serial port connector
1x Parallel port connector
1x TPM module connector
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Jumpers
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1x Clear CMOS jumper
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LED features
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1x 4-pin RGB LED connector
4x EZ Debug LED
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Back panel connectors
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Keyboard / Mouse
VGA
USB 2.0
USB 3.2 Gen 1 5Gbps Type-A
LAN port
Audio connector
USB 2.0
DVI-D
HDMI™
USB 3.2 Gen 1 5Gbps Type-A
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I/O controller
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NUVOTON NCT6795D-M Controller Chip
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Hardware monitor
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CPU/ System/ Chipset temperature detection
CPU/ System fan speed detection
CPU/ System fan speed control
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Form factor
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m-ATX Form Factor
9.6 in. x 9.6 in. (24.4 cm x 24.4 cm)
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BIOS features
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1x 256 Mb flash
UEFI AMI BIOS
ACPI 6.1, SMBIOS 2.8
Multi-language
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Software
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MSI Center
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Box content
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PRO B550M-P GEN3 Motherboard
M.2 Screw / Standoff Set
2 x SATA Cables
I/O Shield
MSI Case Badge
Quick Installation Guide
Product Registration Card
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