ASUS PRIME B840M-A WIFI-CSM Ryzen Socket AM5 Micro-ATX Motherboard

Description

FEATURES
Micro-ATX Form Factor
AMD B840 Chipset
Socket AM5
4x DDR5 DIMM Slots, Supports Up To 192GB
Supports Up to DDR5-7600MHz+ (OC)
Supports AMD EXPO DDR5 Modules
1x PCIe 4.0 x16 slot (supports x16 mode),
2x PCIe 3.0 x16 slots (support x1 mode)
Total supports 3 x M.2 slots and 4 x SATA 6Gb/s ports
2x USB 10Gbps Type-A Ports, 1x USB 5Gbps Type-C Port
4x USB 2.0 Type-A Ports, 2x DisplayPort, 1x HDMI Port
1x Realtek 2.5Gb Ethernet Port, 3x Audio Jacks
1x BIOS FlashBack Button
Realtek 2.5Gb Ethernet
Realtek 7.1 Surround Sound High Definition Audio CODEC
ASUS 5X PROTECTION III
ASUS Q-Design
ASUS Thermal Solution
ASUS EZ DIY BIOS FlashBack LED & Button
ASUS Aura Sync

TECHNICAL SPECIFICATIONS

Brand: ASUS
Series: AMD B840 Series
Model: PRIME B840M-A-CSM
CPU: AMD Socket AM5 for AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors*
* Refer to https://www.asus.com/support/download-center/ for CPU support list.
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)
* Supported memory types, data rate (speed), and number of DRAM modules vary depending on the CPU and memory configuration, for more information please refer to CPU/Memory Support list under the Support tab of product information site or visit https://www.asus.com/support/download-center/. Adjustments will be made based on the specifications of mass-produced memory products available on the market.
* Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.
Graphics: 2 x DisplayPort**
1 x HDMI port***
* Graphics specifications may vary between CPU types. Please refer to AMD CPU specifications.
** Supports max. 8K@30Hz as specified in DisplayPort 1.4.
*** Supports 4K@60Hz as specified in HDMI 2.1.
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)
* Please check the PCIe bifurcation table on the support site (https://www.asus.com/support/FAQ/1037507/).
** Specifications vary by CPU types.
– To ensure compatibility of the device installed, please refer to https://www.asus.com/support/download-center/ for the list of supported peripherals.
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
* Specifications vary by CPU types.
AMD RAIDXpert2 Technology
Ryzen 9000 Series Processors: RAID 0/1/5/10
Ryzen 8000 Series Processors: RAID 0/1
Ryzen 7000 Series Processors: RAID 0/1/10
Ethernet: 1 x Realtek 2.5Gb Ethernet
ASUS LANGuard
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
* USB Type-C power delivery output: max. 5V/3A
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
* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
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 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
2 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-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
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
Remote Management Features: IT Management software supported
ASUS Control Center Express (ACCE)
BIOS: 256 Mb Flash ROM
UEFI AMI BIOS
Manageability: WOL by PME, PXE
Accessories: Cables
2 x SATA 6Gb/s cables
Miscellaneous
1 x M.2 rubber package
2 x Screw packages for M.2 SSD
Documentation
1 x ACC Express Activation Key Card
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)