ASUS PRIME B840M-K motherboard (90MB1PK0-M0EAY0)

The ASUS PRIME B840M-K is a micro ATX motherboard compatible with AMD Ryzen 7000, 8000, and 9000 series processors, offering a stable and versatile platform for a desktop computer. It supports DDR5 memory and provides versatile connections for storage devices as well as expansion slots, making it a good choice for demanding basic use and lighter gaming.

Performance and Processor Support

The motherboard supports AMD's AM5 socket, compatible with the latest Ryzen 7000, 8000, and 9000 series processors. This enables powerful performance and modern features. The UEFI AMI BIOS ensures easy and flexible system management.

Memory and Storage

The PRIME B840M-K supports DDR5 SDRAM memory with two DIMM slots, with a maximum capacity of 128 GB. The memory operates in dual-channel mode, and the motherboard supports both ECC and non-ECC memory. Storage can be expanded with four SATA III connectors and two M.2 slots, supporting both HDD and SSD drives. RAID support (levels 0, 1, 5, and 10) allows for data protection and performance enhancement.

Connectivity and Network

The motherboard features a 2.5 Gb Ethernet LAN connection, providing fast network connectivity. There is no Wi-Fi functionality. USB ports total six: two USB 2.0 ports and four USB 3.2 Gen 1 ports. The graphics card connection includes one HDMI port. Audio supports 7.1-channel sound, with S/PDIF output and a front panel audio connector included.

Build and Additional Features

The ASUS PRIME B840M-K is a black micro ATX-sized motherboard that includes an RGB LED pin header with three RGB LED pins for lighting control. Power connectors include a 24-pin ATX power connector and an 8-pin EPS power connector. There are three chassis fan connectors and one CPU fan connector. Additionally, the motherboard has a TPM connector and a COM connector.

Features

• AMD AM5 platform and Ryzen 7000-9000 series support
• DDR5 memory, 2 memory slots, 128 GB maximum capacity
• M.2 and SATA III storage support, RAID 0/1/5/10
• 2.5 Gb Ethernet LAN, 6 USB ports, HDMI connection
• Micro ATX form factor, RGB LED support, 7.1 audio output

Technical Specifications

• Platform and Processor:
  • AMD B840 chipset
  • AM5 socket, Ryzen 7000/8000/9000 series
  • UEFI AMI BIOS, 256 Mbit
• Memory:
  • DDR5 SDRAM
  • 2 DIMM slots, 128 GB max
  • Dual-channel, ECC and non-ECC
• Storage:
  • 4 x SATA III
  • 2 x M.2 (M-key)
  • RAID 0, 1, 5, 10 support
• Expansion Slots:
  • 1 x PCIe x16 Gen 4
  • 1 x PCIe x16 Gen 3
• Connectivity and Network:
  • 1 x 2.5 Gb Ethernet LAN
  • 2 x USB 2.0
  • 4 x USB 3.2 Gen 1 (3.1 Gen 1)
  • 1 x HDMI
• Audio:
  • 7.1-channel audio output
  • S/PDIF out
• Power Connectors and Cooling:
  • 24-pin ATX power connector
  • 8-pin EPS power connector
  • 3 x chassis fan connectors, 1 x CPU fan connector
• Other Connectors:
  • 1 x COM connector
  • TPM connector
  • RGB LED pin header (3 pins)
• Form Factor and Dimensions:
  • Micro ATX, 244 x 221 mm
  • Color: black
• Operating System Support:
  • Windows 10 x64, Windows 11

Package Contents

• ASUS PRIME B840M-K motherboard
• SATA cables
• Screws

Features