ASUS Prime B840M-A WiFi-CSM

ASUS Prime B840M-A WiFi-CSM AM5 Micro-ATX DDR5 192 GB Motherboard

Asus Motherboard $179.99

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SocketAM5

ChipsetB840

Form FactorMicro-ATX

MemoryDDR5

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The ASUS Prime B840M-A WiFi-CSM is a Micro-ATX motherboard for AM5. It supports DDR5 memory up to 7600 MT/s (OC).

ASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards.
Ready for Advanced AI PC: Designed for the future of AI computing, with the power and connectivity needed for demanding AI applications
AMD AM5 Socket: Ready for AMD Socket AM5 for AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors
Enhanced Power Solution: 6-layer PCB, alloy chokes and durable capacitors for stable power delivery
Ultrafast Connectivity: Wi-Fi 6E, PCIe 4.0 x16 slot, PCIe 4.0 M.2 slots, Realtek 2.5Gb Ethernet, rear USB 10Gbps Type-A ports, rear and front USB 5Gbps Type-C support
Comprehensive Cooling: VRM and M.2 heatsinks, PCH heatsink, hybrid fan headers and Fan Xpert 2+
DIY Friendly Design: Pre-mounted I/O shield, BIOS FlashBack, M.2 heatsink, Q-Antenna, Q-Dashboard, Q-LED Core
Unmatched Personalization: Three Addressable Gen 2 headers, all configurable with ASUS-exclusive Aura Sync RGB lighting
Renowned Software: Armoury Crate, ASUS DriverHub, ASUS GlideX, ASUS MyHotkey

Manufacturer	ASUS
Model Number	PRIME B840M-A WIFI-CSM 90MB1J20-MVAAYC
Launch Date	January 2025
CPU Socket	AM5
Chipset Model	Intel B840
Board Size / Form Factor	Micro-ATX
Supported Memory Type	DDR5
DIMM Slots	4
Maximum RAM Capacity	192 GB
Valid DDR4 Speeds	DDR5-4400 / DDR5-7600 (OC)
ECC Memory Support	No
Expansion Slots (PCIe)	3 × PCIe x16
PCIe x16 (Qty)	3
PCIe x4 (Qty)	0
PCIe x1 (Qty)	0
M.2 Slot Count	3 × M.2
M.2 Device Compatibility	2280 - M Key, 2242 / 2260 / 2280 - M Key, 2280 - M Key
SATA III Ports	4 × SATA 6Gbps
SATA Express Ports	0
Wired Networking (LAN)	N/A
Onboard Wi-Fi	Yes
Wi-Fi Standard	6E (802.11ax, 6 GHz)
Rear-Panel USB	USB 3.2 Gen2, USB 3.2 Gen1, USB 2.0
Internal USB 3.2 Gen 2x2 Headers	0
Internal USB 3.2 Gen 2 Headers	1
Internal USB 3.2 Gen 1 Headers	1
Internal USB 2.0 Headers	2
NVIDIA SLI	No
AMD CrossFire	No
RAID Capability	Yes
Back-Connect Layout	No
Manufacturer Part Number (MPN)	PRIME B840M-A WIFI-CSM
SKU Code	PRIME B840M-A WIFI-CSM
GTIN / EAN	197105797154