MSI B840M Gaming Plus WiFi6E AM5 Micro‑ATX Motherboard – DDR5, PCIe 4.0
MSI B840M GAMING PLUS WIFI6E (Socket AM5) DDR5 Micro‑ATX Motherboard
Build a powerful and compact AM5 system with the MSI B840M Gaming Plus WiFi6E motherboard. Designed for Ryzen 7000, 8000, and 9000‑series processors, this Micro‑ATX board delivers excellent performance with DDR5 support up to 8000+ MT/s (OC), PCIe 4.0 expansion, and dual M.2 Gen4 slots for high‑speed NVMe storage. With Wi‑Fi 6E, 2.5Gb LAN, Audio Boost, and MSI’s enhanced cooling design, this board is ideal for gaming, productivity, and everyday performance builds. The board also includes MSI EZ‑DIY features such as EZ PCIe Clip II, EZ M.2 Clip II, and Flash BIOS Button for effortless installation and maintenance.
Specifications
Socket: AM5
Chipset: AMD B840
Form Factor: Micro‑ATX (243.84 × 243.84 mm
CPU Support
Supports AMD Ryzen: • 9000 Series • 8000 Series • 7000 Series
Memory
Type: DDR5
Max Speed: 8000+ MT/s (OC)
Slots: 4 × 288‑pin DIMM
Max Capacity: 256GB
Features: Dual‑Channel, MSI Memory Boost, EXPO & XMP support
Expansion Slots
PCIe 4.0 x16: 1 (GPU slot, Steel Armor)
PCIe 3.0 x16: 1
PCIe 4.0 x1: 1
Storage
M.2 Slots: 2 × PCIe Gen 4.0 x4 (64Gbps), Primary slot includes M.2 Shield Frozr
SATA Ports: 4 × SATA 6Gb/s
RAID Support: RAID 0/1/10
Networking
LAN: Realtek 8125D 2.5G LAN
Wireless: Wi‑Fi 6E (2.4/5/6GHz, MU‑MIMO)
Bluetooth: 5.3
USB Connectivity
Rear I/O: 4 × USB 2.0, 2 × USB 5Gbps Type‑A, 1 × USB 10Gbps Type‑A, 1 × USB 10Gbps Type‑C, HDMI, LAN, Wi‑Fi antenna ports, 3 × audio jacks, Clear CMOS button, Flash BIOS button
Internal Headers: 4 × USB 2.0, 3 × USB 5Gbps, COM header, Front panel audio, TPM header, EZ Conn‑header
Cooling & Internal I/O
Extended Heatsink Design, 7W/mK MOSFET thermal pads, Extra choke thermal pads, M.2 Shield Frozr, 3 × ARGB headers (Addressable V2), 1 × RGB header, 24‑pin ATX power, 8‑pin CPU power
Audio
Realtek ALC897 7.1‑Channel High Definition Audio Audio Boost technology
Special Features
Supports Ryzen 9000 / 8000 / 7000 CPUs
DDR5 Memory Boost (8000+ MT/s OC)
Lightning Gen 4 PCIe & M.2
Wi‑Fi 6E + 2.5Gb LAN
EZ PCIe Clip II
EZ M.2 Clip II + Remover
Frozr AI Cooling
Core Boost power design
Audio Boost for enhanced clarity