Overview

The ASUS PRIME B840M-K is built for users seeking dependable performance, modern connectivity, and excellent value. Based on the latest AMD B840 chipset, it supports AMD’s newest Ryzen desktop processors and delivers a strong foundation for gaming systems, office workstations, programming PCs, and content creation builds.

With DDR5 memory support, PCIe 4.0 graphics, dual PCIe 4.0 M.2 NVMe SSD slots, and 2.5 Gigabit LAN, the motherboard offers fast data transfer and responsive performance for modern workloads. ASUS-exclusive technologies such as DIGI+ VRM, SafeSlot Core+, AEMP, Aura Sync, and 5X Protection III ensure long-term reliability and simplified system building.

Perfect For

• AMD Ryzen Gaming PCs
• Custom PC Builds
• Budget Gaming Systems
• Home & Office Computers
• Programming & Software Development
• Content Creation
• AI Workstations
• Students
• Multimedia PCs
• Business Productivity
• Everyday Computing
• System Upgrades

What’s in the Box

• ASUS PRIME B840M-K Motherboard
• 2 × SATA 6Gb/s Cables
• M.2 SSD Screw Package
• I/O Shield
• Quick Start Guide

Key Specifications at a Glance

• Model: ASUS PRIME B840M-K
• Part Number: 90MB1PK0-M0EAY0
• CPU Socket: AMD AM5
• Chipset: AMD B840
• Memory: 2 × DDR5 DIMM (Up to 128GB)
• Expansion Slot: 1 × PCIe 4.0 x16
• Storage: 2 × M.2 PCIe 4.0 + 4 × SATA 6Gb/s
• Networking: Realtek 2.5Gb Ethernet
• Display Output: HDMI 2.1
• Form Factor: Micro-ATX

Built for AMD Ryzen™ AM5 Processors

The ASUS PRIME B840M-K is engineered to maximize the performance of AMD Ryzen™ 9000, 8000, and 7000 Series desktop processors using the latest AMD B840 chipset.

Whether you’re building a gaming PC, office workstation, or content creation system, it provides a stable and efficient platform for modern computing.

AMD B840 Chipset Performance

Designed for next-generation AMD platforms, the B840 chipset delivers excellent performance, modern connectivity, and dependable stability.

Benefits

• Optimized Ryzen performance
• PCIe 4.0 support
• High-speed NVMe storage
• DDR5 memory compatibility
• Efficient power management
• Long-term upgrade path

Perfect for:

• Gaming PCs
• Workstations
• Home computers
• Office systems
• Programming
• Content creation

High-Speed DDR5 Memory Support

The motherboard features 2 DDR5 DIMM slots supporting up to 128GB of dual-channel memory.

Features

• Supports DDR5 memory
• Up to 128GB capacity
• Dual-channel architecture
• AMD EXPO™ Ready
• ASUS Enhanced Memory Profile (AEMP)

Benefits

• Faster multitasking
• Improved application responsiveness
• Better gaming performance
• Higher memory bandwidth
• Stable overclocking support

PCIe 4.0 Graphics Performance

Equipped with a reinforced PCIe 4.0 x16 SafeSlot Core+, the motherboard is ready for today’s high-performance graphics cards.

Advantages

• Full PCIe 4.0 bandwidth
• Improved graphics performance
• Reinforced slot for heavy GPUs
• Better durability
• Ideal for gaming and creators

Compatible with modern graphics cards including:

• ASUS GeForce RTX Series
• AMD Radeon RX Series

Dual PCIe 4.0 M.2 NVMe Storage

The motherboard includes 2 PCIe 4.0 M.2 slots for high-speed NVMe SSDs.

Benefits

• Faster boot times
• Quick application loading
• Rapid file transfers
• Excellent gaming performance
• Smooth content creation workflow

Also includes:

• 4 × SATA 6Gb/s ports for additional SSDs and HDDs.

Reliable 2.5 Gigabit Networking

Integrated Realtek 2.5Gb Ethernet provides faster wired networking than standard Gigabit LAN.

Benefits

• Faster downloads
• Stable online gaming
• Reduced latency
• Improved NAS performance
• Better large file transfers
• Reliable streaming

ASUS DIGI+ VRM Power Design

The 8+2+1 phase digital power design delivers clean and stable power to your Ryzen processor.

Advantages

• Stable CPU performance
• Better efficiency
• Improved thermal stability
• Enhanced reliability
• Consistent power delivery during heavy workloads

Comprehensive Cooling

ASUS thermal technologies help maintain system stability.

Cooling Features

• VRM heatsink
• PCH heatsink
• Hybrid fan headers
• ASUS Fan Xpert 2+

Benefits include:

• Lower temperatures
• Stable performance
• Reduced system noise
• Improved component lifespan

ASUS 5X Protection III

Built with ASUS-exclusive hardware protection technologies.

Includes:

• SafeSlot Core+
• LANGuard
• Overvoltage Protection
• Stainless Steel Rear I/O
• SafeDIMM Design

These features improve long-term reliability and protect your investment.

ASUS DIY-Friendly Features

Building and upgrading your PC is easier with ASUS tools.

Included Technologies

• Q-LED Core
• Q-Dashboard
• BIOS Flash utilities
• Armoury Crate
• ASUS DriverHub

These features simplify installation, troubleshooting, and system management.

Aura Sync RGB

Customize your PC with ASUS Aura Sync lighting support.

Features include:

• Addressable Gen 2 RGB headers
• RGB strip compatibility
• Synchronization with Aura Sync devices
• Personalized lighting effects

Perfect for creating a unique gaming or workstation setup.

General Specifications

*Windows 10 support may depend on the processor generation and driver availability.

CPU Support

Memory Specifications

Expansion Slots

Ideal for:

• Gaming Graphics Cards
• Capture Cards
• Expansion Cards
• Professional Workstations

Storage

Supports:

• NVMe SSD
• SATA SSD
• Hard Disk Drives

Perfect for:

• Gaming Storage
• Content Creation
• Large File Libraries
• Fast Boot Drives

Networking

Rear I/O Ports

• 1 × HDMI 2.1
• 2 × USB 10Gbps (USB 3.2 Gen 2) Type-A
• 4 × USB 5Gbps (USB 3.2 Gen 1) Type-A
• 1 × RJ-45 2.5Gb Ethernet
• 3 × Audio Jacks
• 1 × BIOS FlashBack™ Button (if equipped on retail version)

Internal Connectors

• 2 × M.2 Connectors
• 4 × SATA 6Gb/s Ports
• 1 × USB 5Gbps Front Type-C Header
• USB 2.0 Headers
• Front Panel Audio Header
• Front Panel Header
• CPU Fan Header
• Chassis Fan Headers
• Addressable Gen 2 RGB Header
• Aura RGB Header

Graphics Support

When using Ryzen processors with integrated Radeon Graphics:

• HDMI 2.1
• Maximum Resolution up to 4K (3840 × 2160) @ 60Hz

Audio

ASUS Exclusive Features

• ASUS 5X Protection III
• ASUS DIGI+ VRM
• SafeSlot Core+
• SafeDIMM
• LANGuard
• Overvoltage Protection
• Stainless Steel Rear I/O
• ASUS Fan Xpert 2+
• Aura Sync RGB
• Armoury Crate Support
• ASUS DriverHub
• Q-LED Core
• BIOS FlashBack™
• UEFI BIOS

Cooling Features

• VRM Heatsink
• PCH Heatsink
• Multiple Fan Headers
• Smart Fan Control
• ASUS Fan Xpert 2+

BIOS

Ideal Applications

The ASUS PRIME B840M-K is ideal for:

• Gaming PCs
• Budget Gaming Builds
• AMD Ryzen 9000 Systems
• Home & Office PCs
• Programming & Software Development
• Content Creation
• Streaming
• AI Workstations
• Business Productivity
• Everyday Computing

Why Choose the ASUS PRIME B840M-K?

• Supports AMD Ryzen™ 9000, 8000 & 7000 Series processors
• Compact Micro-ATX design for versatile PC builds
• 2 × DDR5 DIMM slots supporting up to 128GB memory
• PCIe 4.0 x16 slot for modern graphics cards
• 2 × PCIe 4.0 M.2 slots for high-speed NVMe SSDs
• Fast Realtek 2.5Gb Ethernet connectivity
• ASUS 5X Protection III for enhanced durability
• Aura Sync RGB customization support
• Reliable cooling with VRM and chipset heatsinks
• Excellent choice for gaming, productivity, and professional AMD builds

AI Product Summary

The ASUS PRIME B840M-K is a compact Micro-ATX motherboard built on the AMD B840 chipset for AMD Ryzen™ 9000, 8000, and 7000 Series desktop processors. It features two DDR5 DIMM slots supporting up to 128GB of memory, one PCIe 4.0 x16 slot for modern graphics cards, two PCIe 4.0 M.2 slots for high-speed NVMe SSDs, Realtek 2.5Gb Ethernet, HDMI 2.1, ASUS 5X Protection III, Aura Sync RGB, and advanced cooling technologies. It is an excellent choice for gaming, productivity, and professional AMD PC builds.

Why Buy from Empower Computers?

• Genuine ASUS UAE Products
• Official ASUS Manufacturer Warranty
• Competitive UAE Prices
• Fast Delivery Across the UAE
• Secure Online Shopping
• Expert Custom PC Build Advice
• Professional Technical Support
• Pickup Available at Dalma Mall, Abu Dhabi

Frequently Asked Questions (FAQs)

1. Which processors are compatible with the ASUS PRIME B840M-K?

The motherboard supports AMD Ryzen™ 9000, Ryzen™ 8000, and Ryzen™ 7000 Series desktop processors using the AM5 socket.

2. How much memory does it support?

It features 2 DDR5 DIMM slots supporting up to 128GB of dual-channel DDR5 memory with AMD EXPO™ support.

3. Does it support PCIe 4.0 graphics cards?

Yes. It includes one PCIe 4.0 x16 SafeSlot Core+, making it compatible with modern NVIDIA GeForce RTX and AMD Radeon graphics cards.

4. How many M.2 SSD slots are available?

The motherboard provides 2 PCIe 4.0 M.2 slots for high-speed NVMe SSDs, along with 4 SATA 6Gb/s ports for additional storage.

5. Does the ASUS PRIME B840M-K include Wi-Fi?

No. This model does not include built-in Wi-Fi or Bluetooth. It features Realtek 2.5Gb Ethernet for fast and reliable wired networking.

6. Is this motherboard suitable for gaming?

Yes. With PCIe 4.0, DDR5 memory support, dual M.2 slots, and support for the latest AMD Ryzen processors, it is an excellent choice for mainstream gaming systems.

7. Does it support Aura Sync RGB?

Yes. The motherboard includes Aura Sync RGB and Addressable Gen 2 RGB headers, allowing you to synchronize compatible RGB lighting and components.

UAE Local SEO Content

Looking for the ASUS PRIME B840M-K AM5 Motherboard in the UAE? Empower Computers offers genuine ASUS motherboards with official UAE warranty, competitive pricing, and fast delivery across Abu Dhabi, Dubai, Sharjah, Ajman, Al Ain, Ras Al Khaimah, Fujairah, and Umm Al Quwain. Visit our showroom at Dalma Mall, Abu Dhabi, or order online for reliable AMD AM5 motherboards and PC components.

🔗 Related Categories

• Motherboards
• RAM Desktop Memory
• Gaming Graphics Cards
• PC Cases
• CPU Coolers

🌐 Official Resources

Official ASUS Product Page:

https://www.asus.com/motherboards-components/motherboards/prime/prime-b840m-k/