MB ASUS PRIME B840M-A WIFI B840 AM5 4XDDR5DC-7600(OC) HDMI 1XPCIE4.0X16 4XSATA3 3XM.2 WIFI-6E BT USB MATX 90MB1J20-M0EAY0

CPU
AMD Socket AM5 for AMD Ryzen™ 9000 & 8000 & 7000 Series Desktop Processors

Chipset
AMD B840 Chipset

Memory
4 x DIMM slots, max. 192GB, DDR5
Supports up to 7600+MT/s (OC) with Ryzen™ 9000 & 8000 & 7000 Series Processors, ECC and Non-ECC, Un-buffered DIMM
Dual channel memory architecture
Supports AMD Extended Profiles for Overclocking (EXPO™)
ASUS Enhanced Memory Profile (AEMP)

Graphics
2 x DisplayPort
1 x HDMI™ port

Expansion Slots
AMD Ryzen™ 9000 & 7000 Series Desktop Processors: 
- 1 x PCIe 4.0 x16 slot (supports x16 mode)
AMD Ryzen™ 8000 Series Desktop Processors: 
- 1 x PCIe 4.0 x16 slot (supports x8/x4 mode)
AMD B840 Chipset: 
- 2 x PCIe 3.0 x16 slots (support x1 mode)

Storage
Total supports 3 x M.2 slots and 4 x SATA 6Gb/s ports
AMD Ryzen™ 9000 & 7000 Series Desktop Processors: 
- M.2_1 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
- M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
AMD Ryzen™  8000 Series Desktop Processors: 
- M.2_1 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
- M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4/x2 mode)
AMD B840 Chipset: 
- M.2_3 slot (Key M), type 2280 (supports PCIe 3.0 x4 mode)
- 4 x SATA 6Gb/s ports

Ethernet
1 x Realtek 2.5Gb Ethernet
ASUS LANGuard

Wireless & Bluetooth
Wi-Fi 6E
2x2 Wi-Fi 6E (802.11ax)
Supports 2.4/5/6GHz frequency band
Bluetooth® v5.3

USB
Rear USB (Total 7 ports): 
- 2 x USB 10Gbps ports (2 x Type-A)
- 1 x USB 5Gbps port (1 x USB Type-C®)
- 4 x USB 2.0 ports (4 x Type-A)
Front USB (Total 7 ports): 
- 1 x USB 5Gbps connector (supports USB Type-C®)
- 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
- 2 x USB 2.0 headers support 4 additional USB 2.0 ports

Audio
Realtek 7.1 Surround Sound High Definition Audio CODEC
- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking
- Supports up to 24-Bit/192 kHz playback
Audio Features: 
- Audio Shielding
- Premium audio capacitors
- Dedicated audio PCB layers

Back Panel I/O Ports
2 x USB 10Gbps ports (2 x Type-A)
1 x USB 5Gbps port (1 x USB Type-C®)
4 x USB 2.0 ports (4 x Type-A)
2 x DisplayPort
1 x HDMI™ port
1 x Wi-Fi module
1 x Realtek 2.5Gb Ethernet port
3 x Audio jacks
1 x BIOS FlashBack™ button

Internal I/O Connectors
Fan and Cooling Related: 
- 1 x 4-pin CPU Fan header
- 1 x 4-pin CPU OPT Fan header
- 1 x 4-pin AIO Pump header
- 3 x 4-pin Chassis Fan headers
Power Related: 
- 1 x 24-pin Main Power connector
- 1 x 8-pin +12V CPU Power connector
Storage Related: 
- 3 x M.2 slots (Key M)
- 4 x SATA 6Gb/s ports
USB: 
- 1 x USB 5Gbps connector (supports USB Type-C® )
- 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
- 2 x USB 2.0 headers support 4 additional USB 2.0 ports
Miscellaneous: 
- 3 x Addressable Gen 2 headers
- 1 x Clear CMOS header
- 1 x COM Port header
- 1 x Front Panel Audio header (F_AUDIO)
- 1 x S/PDIF Out header
- 1 x SPI TPM header (14-1 pin)
- 1 x 10-1 pin Front Panel System header

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
ASUS Thermal Solution: 
- M.2 heatsink
- VRM heatsink design
ASUS EZ DIY: 
- BIOS FlashBack™ button
- BIOS FlashBack™ LED
- Pre-mounted I/O shield
Aura Sync: 
- Addressable Gen 2 headers

Software Features
ASUS Exclusive Software: 
Armoury Crate
- Aura Creator
- Aura Sync
- Fan Xpert 2+
- Power Saving
ASUS DriverHub
ASUS GlideX
TurboV Core
ASUS CPU-Z
Adobe Creative Cloud (Free Trial)
Norton 360 Deluxe (60 Days Free Trial)
WinRAR (40 Days Free Trial)
UEFI BIOS: 
ASUS EZ DIY
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 3
- ASUS UEFI BIOS EZ Mode
- ASUS MyHotkey

BIOS
256 Mb Flash ROM, UEFI AMI BIOS

Manageability
WOL by PME, PXE

Accessories
Cables: 
- 2 x SATA 6Gb/s cables
Miscellaneous: 
- 1 x ASUS WiFi Q-Antenna
- 1 x M.2 rubber package
- 2 x Screw packages for M.2 SSD
Documentation: 
- 1 x Quick start guide

Operating System
Windows 11, Windows 10 64-bit

Form Factor
micro-ATX Form Factor
9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)