Key Features
Model: PRIME B840M-A WIFI-CSM
Supported CPU: Ryzen 9000/8000/7000 Series Processors for Socket AM5
RAM: 4x DDR5, up to 192GB, 7600+(OC) MT/s
Graphics Output: 1x HDMI, 2 x DisplayPort
Features: 1 x Realtek 2.5Gb, Wi-Fi 6E, Bluetooth v5.3
Basic Information | |
Supported CPU | AMD Socket AM5 for AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors |
Chipset | AMD B840 Chipset |
BIOS | 256 Mb Flash ROM, UEFI AMI BIOS |
Form Factor | micro-ATX Form Factor 9.6 inch x 9.6 inch (24.4 cm x 24.4 cm) |
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. |
Expansion Slots | |
PCI | 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) |
M.2 Socket | Total supports 3 x M.2 , (Key M), type 2242/2260/2280 |
Memory | |
Type | DDR5 |
Slots | 4 x DIMM slots |
Supported Memory | Supports up to 7600+MT/s (OC) with Ryzen 9000 & 8000 & 7000 Series Processors, ECC and Non-ECC, Un-buffered DIMM |
Maximum Memory | Max. 192GB |
Graphics | |
Graphics | 2 x DisplayPort** 1 x HDMI™ port*** |
Connector & Ports | |
HDMI | 1x HDMI |
USB (s) | 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 |
LAN Port (s) | 1 x Realtek 2.5Gb Ethernet ASUS LANGuard |
Wireless Communication module | Wi-Fi 6E 2x2 Wi-Fi 6E (802.11ax) Supports 2.4/5/6GHz frequency band Bluetooth v5.3 |
Supported 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. |
RAID | 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 |
Audio | 3 x Audio jacks |
Internal I/O Ports | 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 |
TPM (Trusted Platform Module ) | 1 x SPI TPM header (14-1 pin) |
Others | |
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 |
Bundled Software | 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 |
Warranty Information | |
Manufacturing Warranty | 3 Years Warranty |
The Asus PRIME B840M-A WIFI-CSM AM5 mATX Motherboard optimizes the performance and capabilities of AMD Ryzen 9000 series CPUs, making it an ideal choice for DIY builders and IT professionals. This high-performance Asus motherboard includes an 8+2+1 phase power design with distinct MOSFETs, providing stable and efficient power delivery for your system. This Asus Motherboards advanced multi-layered PCB design enhances heat dissipation, allowing for more efficient overclocking and overall system stability. The Asus AM5 motherboard supports DDR5 memory of up to 192GB, which allows for quicker data transfer speeds and increased system responsiveness. The availability of PCIe 4.0 slots ensures fast connectivity for your graphics cards and other components, while Wi-Fi 6E provides lightning-quick and dependable wireless networking. The ASUS Control Center Express program simplifies IT management by providing easy performance optimization tools through firmware and software features, making it easier to monitor and control your system. Whether you're building a high-performance PC for gaming, content creation, or professional use, this Asus Ryzen motherboard provides a dependable and powerful solution that combines robust performance, advanced connectivity, and efficient management capabilities, making it an ideal Asus AMD motherboard for your requirements.