ASUS PRIME B840M-A WIFI-CSM AMD AM5 | DDR5 | M-ATX MOTHERBOARD

ASUS PRIME B840M-A WIFI-CSM AMD AM5 | DDR5 | M-ATX MOTHERBOARD

🛠 Chipset & CPU Support:
Model: PRIME B840M-A WIFI-CSM
Chipset: AMD B840
CPU Support: AMD Socket AM5 for Ryzen™ 9000, 8000 & 7000 Series Desktop Processors
*Refer to ASUS support site for full CPU compatibility.
💾 Memory Specifications:
Memory Slots: 4x DDR5 DIMM, up to 256GB
Supported Speeds:
Up to 7600+ MT/s (OC) with Ryzen™ 9000, 8000 & 7000 Series
Supports Dual-Channel, ECC & Non-ECC, Un-buffered, AMD EXPO™, ASUS AEMP
*Non-ECC Un-buffered DDR5 supports On-Die ECC
🎮 Graphics & Display:
2x DisplayPort 1.4 (up to 8K @ 30Hz)*
1x HDMI™ 2.1 port (up to 4K @ 60Hz)*
*Graphics specifications may vary between CPU types.
🔌 Expansion Slots:
With Ryzen™ 9000 & 7000:
1x PCIe 4.0 x16 (x16 mode)
With Ryzen™ 8000:
1x PCIe 4.0 x16 (x8/x4 mode)
Chipset:
2x PCIe 3.0 x16 (x1 mode)
*Please see ASUS support for PCIe bifurcation details and compatibility.
💽 Storage Support:
3x M.2 slots:
Ryzen™ 9000/7000:
M.2_1: PCIe 4.0 x4 (2280)
M.2_2: PCIe 4.0 x4 (2242/2260/2280)
Ryzen™ 8000:
M.2_1: PCIe 4.0 x4 (2280)
M.2_2: PCIe 4.0 x4/x2 (2242/2260/2280)
Chipset:
M.2_3: PCIe 3.0 x4 (2280)
4x SATA 6Gb/s ports
RAID Support:
Ryzen™ 9000: RAID 0/1/5/10
Ryzen™ 8000: RAID 0/1
Ryzen™ 7000: RAID 0/1/10
🎧 Audio:
Realtek 7.1 Surround Sound High Definition Audio CODEC
Jack-detection, multi-streaming, front panel jack-retasking
Up to 24-Bit/192 kHz playback
Audio Features:
Audio shielding, premium capacitors, dedicated PCB layers
*A chassis with HD audio module is required for 7.1 output.
⚡ USB Connectivity:
Rear:
2x USB 10Gbps (Type-A)
1x USB 5Gbps (Type-C®)
4x USB 2.0 (Type-A)
Front:
1x USB 5Gbps (Type-C®)
1x USB 5Gbps header (2 ports)
2x USB 2.0 headers (4 ports)
*USB-C front panel: max 5V/3A output
🌐 Networking:
LAN:
1x Realtek 2.5Gb Ethernet with ASUS LANGuard
Wi-Fi:
Wi-Fi 6E (2×2, 802.11ax), supports 2.4/5/6GHz
Bluetooth® v5.3
*Wi-Fi 6E support depends on OS and region; Windows 11 or later recommended.
🔧 Internal Connectors:
Power:
1x 24-pin ATX
1x 8-pin +12V CPU
Cooling:
1x CPU Fan
1x CPU OPT Fan
1x AIO Pump
3x Chassis Fan headers
Storage:
3x M.2 Slots
4x SATA
USB:
1x USB 5Gbps (Type-C®)
1x USB 5Gbps header (2 ports)
2x USB 2.0 headers (4 ports)
Misc:
3x Addressable Gen2 headers
1x Clear CMOS header
1x COM Port header
1x Front Panel Audio header
1x S/PDIF Out header
1x SPI TPM header
1x 10-1 pin System Panel header
🔆 LED & Special Features:
ASUS 5X PROTECTION III:
DIGI+ VRM, LANGuard, Overvoltage Protection, SafeSlot Core+, Stainless-steel back I/O
ASUS Q-Design:
Q-Antenna, Q-Dashboard, Q-DIMM, Q-LED Core, Q-Slot
Thermal Solutions:
M.2 heatsinks, VRM heatsink design
DIY Tools:
BIOS FlashBack™, BIOS LED, Pre-mounted I/O shield
Aura Sync:
Addressable Gen2 RGB headers
🧰 Software Features:
ASUS Exclusive:
Armoury Crate, Aura Creator, Aura Sync, Fan Xpert 2+, ASUS DriverHub, TurboV Core, ASUS CPU-Z, Power Saving, GlideX
Bundled Software:
Norton 360 Deluxe (60-day trial), WinRAR (40-day trial)
UEFI BIOS:
EZ Flash 3, CrashFree BIOS 3, EZ Mode, MyHotkey
BIOS:
256Mb Flash ROM, UEFI AMI BIOS
Manageability:
WOL by PME, PXE, ASUS Control Center Express (ACCE)
📦 Included Accessories:
2x SATA 6Gb/s cables
1x ASUS WiFi Q-Antenna
1x M.2 rubber package
2x Screw packages for M.2 SSD
1x ACC Express Activation Key Card
Quick Start Guide
🖥 Operating System:
Support for Windows® 11, Windows® 10 64-bit
📐 Package Dimensions & Form Factor:
Form Factor: micro-ATX (9.6 x 9.6 in / 24.4 x 24.4 cm)