Description
Asus Prime B840M-A Wifi AMD Ryzen Socket AM5 PCle 4.0 Gaming MotherBoard
micro-ATX Form Factor9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)
AMD Socket AM5 for AMD Ryzen™ 9000 & 8000 & 7000 Series Desktop Processors*
Wi-Fi 6E2x2 Wi-Fi 6E (802.11ax)Supports 2.4/5/6GHz frequency band*Bluetooth® v5.3*** WiFi 6E 6GHz regulatory may vary between countries, supported only in Windows 11 or later.** The Bluetooth® version may vary, please refer to the Wi-Fi module manufacturer’s website for the latest specifications.
1 x Realtek 2.5Gb EthernetASUS LANGuard
4 x DIMM slots, max. 256GB, DDR5Supports up to 7600+MT/s (OC) with Ryzen™ 9000 & 8000 & 7000 Series Processors, ECC and Non-ECC, Un-buffered DIMM*Dual channel memory architectureSupports AMD Extended Profiles for Overclocking (EXPO™)ASUS Enhanced Memory Profile (AEMP)
Storage Compatibility
Total supports 3 x M.2 slots and 4 x SATA 6Gb/s portsAMD Ryzen™ 9000 & 7000 Series Desktop ProcessorsM.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 ProcessorsM.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 ChipsetM.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 TechnologyRyzen™ 9000 Series Processors: RAID 0/1/5/10Ryzen™ 8000 Series Processors: RAID 0/1Ryzen™ 7000 Series Processors: RAID 0/1/10
2 x DisplayPort**1 x HDMI™ port**** Graphics specifications may vary between CPU types.** Supports max. 8K@30Hz as specified in DisplayPort 1.4.*** Supports 4K@60Hz as specified in HDMI 2.1.
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 ports2 x USB 2.0 headers support 4 additional USB 2.0 ports* USB Type-C® power delivery output: max. 5V/3A
AMD Ryzen™ 9000 & 7000 Series Desktop Processors*1 x PCIe 4.0 x16 slot (supports x16 mode)AMD Ryzen™ 8000 Series Desktop Processors1 x PCIe 4.0 x16 slot (supports x8/x4 mode)**AMD B840 Chipset2 x PCIe 3.0 x16 slots (support x1 mode)
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 playbackAudio 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.
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 DisplayPort1 x HDMI™ port1 x Wi-Fi module1 x Realtek 2.5Gb Ethernet port3 x Audio jacks1 x BIOS FlashBack™ button
Internal I/O Connectors
Fan and Cooling Related1 x 4-pin CPU Fan header1 x 4-pin CPU OPT Fan header1 x 4-pin AIO Pump header3 x 4-pin Chassis Fan headersPower Related1 x 24-pin Main Power connector1 x 8-pin +12V CPU Power connectorStorage Related3 x M.2 slots (Key M)4 x SATA 6Gb/s portsUSB1 x USB 5Gbps connector (supports USB Type-C® )1 x USB 5Gbps header supports 2 additional USB 5Gbps ports2 x USB 2.0 headers support 4 additional USB 2.0 portsMiscellaneous3 x Addressable Gen 2 headers1 x Clear CMOS header1 x COM Port header1 x Front Panel Audio header (F_AUDIO)1 x S/PDIF Out header1 x SPI TPM header (14-1 pin)1 x 10-1 pin Front Panel System header
ASUS 5X PROTECTION III- DIGI+ VRM- LANGuard- Overvoltage protection- SafeSlot Core+- Stainless-steel back I/OASUS Q-Design- Q-Antenna- Q-Dashboard- Q-DIMM- Q-LED Core- Q-SlotASUS Thermal Solution- M.2 heatsink- VRM heatsink designASUS EZ DIY- BIOS FlashBack™ button- BIOS FlashBack™ LED- Pre-mounted I/O shieldAura Sync- Addressable Gen 2 headers
Cables2 x SATA 6Gb/s cablesMiscellaneous1 x ASUS WiFi Q-Antenna1 x M.2 rubber package2 x Screw packages for M.2 SSDDocumentation1 x Quick start guide
Windows 11, Windows 10 64-bit
256 Mb Flash ROM, UEFI AMI BIOS
1 Year ( As per Manufacturer Policy )
