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MSI PRO B840M-B Motherboard AMD DDR5 UDIMM mini ATX SATA AM5 4711377360166 4711377360166model Processor support - Processor supportSupports AMD Ryzen™ 9000/8000/7000 Series Desktop Processors
- chassisAM5
- operating systemWindows® 11 64-bit
- configurationmATX (226mm × 243.84mm)
Chipset Memory - Memory2× DDR5 UDIMM, Maximum 128GB
- Memory supportDDR5 8000–5600 (OC) / 5600–4800 (JEDEC), Dual-Channel, Non-ECC, Un-buffered, AMD EXPO, CUDIMM (Clock Driver bypass)
- NotesCompatibility and speeds vary by CPU and manual settings.
graphics - Integrated graphics1× HDMI 2.1 (4K 60Hz), 1× VGA (up to 2048x1536/50Hz)
- NotesOnly available on processors with integrated graphics
Expansion slots - PCI-E x161 (PCIe 4.0 from CPU, x16/x8/x4 depending on CPU)
- PCI-E x11 (PCIe 3.0 from Chipset)
storage - M.2 Slot2 (PCIe 4.0 x4, 2280/2260)
- SATA III4× SATA 6G
Disk Management - RAID supportRAID 0, RAID 1, RAID 10 (SATA); RAID 0, RAID 1 (M.2 NVMe)
Connections - USB 5Gbps / Front1× Type-C, 2× Type-A
- USB 5Gbps / Rear4× Type-A
- USB 2.0 / Front4
- USB 2.0 / Rear2
- LANRealtek® 8125D 2.5G LAN
- Internal IOATX_PWR, CPU_PWR, CPU Fan, 2× System Fan, Front Panel (JFP), Chassis Intrusion (JCI), Front Audio (JAUD), COM Port, 3× Addressable RGB V2, 1× RGB, TPM pin
- Back Panel PortsClear CMOS Button, HDMI, VGA, USB 5Gbps Type-A, 2.5G LAN, Audio connectors, Flash BIOS Button, USB 2.0
Audio - AudioRealtek® ALC897, 7.1-Channel High Definition Audio
Status light - Light bulbs4× EZ Debug LED, 1× EZ Memory Detection LED
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