MSI PRO B840-S EVO WIFI6E Socket AM5

Chipset and CPU

• AMD B840 chipset, optimised for stability and basic connectivity without CPU overclocking (memory only).

• Socket AM5, compatible with Ryzen 9000/8000/7000 Series (including APUs with integrated graphics); requires updated BIOS for newer CPUs.

• 7+2+1 digital phase VRM design with 8-pin connector, sufficient for CPUs up to 105W TDP in sustained use.

Memory

• 4 dual-channel DDR5 UDIMM slots, up to 256GB total (128GB per module).

• Support up to DDR5-8000+ MT/s (OC) or 5600 MT/s JEDEC; AMD EXPO compatible for easy memory overclocking.

• Includes EZ Memory Detection LED for quick RAM fault diagnosis.

Storage and expansion

• 3 M.2 PCIe slots: M.2_1/2 (CPU, PCIe 4.0 x4 up to 22110), M.2_3 (chipset, PCIe 3.0 x4); with Shield Frozr for heat dissipation.

• 4 SATA 6G ports with RAID 0/1/10 (SATA) and RAID 0/1 (NVMe).

• PCIe slots: 1x PCIe 4.0 x16 (GPU, from CPU), 1x PCIe 3.0 x4 (chipset); supports heavy graphics with Steel Armor.

Network and wireless connectivity

• Realtek 8125D 2.5G wired LAN for fast transfers and low latency.

• IntegratedWi-Fi 6E (M.2 Key-E) with Bluetooth 5.3, supports tri-band (2.4/5/6 GHz) up to 2.4 Gbps and MU-MIMO.

USB and rear I/O ports

• Rear: 1x USB 10G Type-C, 1x USB 10G Type-A, 2x USB 5G Type-A, 4x USB 2.0.

• Front: 1x USB 5G Type-C, 2x USB 5G Type-A, 4x USB 2.0.

• Video: 1x HDMI 2.1 (4K@60Hz, only with iGPU CPUs).

Audio and cooling

• Realtek ALC897 7.1-channel HD audio with anti-interference design.

• Dedicated heatsinks for chipset and M.2; headers for 1x CPU Fan, 1x Pump/Sys Fan, 4x Sys Fan, RGB/ARGB (3x JARGB_V2, 1x JRGB).

• EZ Debug LEDs (4 phases) for CPU/DRAM/VGA/BOOT diagnostics.

Form factor and accessories

• ATX form factor (243.84 x 304.8 mm), simple silver office design.

• Internal headers: JFP, JCOM, JAUD, JCI (intrusion), JDASH (tuning), TPM 2.0.

• Ideal for AI-PCs, EZ-DIY and professional environments; supports Windows 11 64-bit.