Asus PRIME B840M-K AMD Ryzen DDR5 Micro ATX Motherboard - Socket AM5 - 90MB1PK0-M0EAY0
The ASUS PRIME B840M-K AM5 micro-ATX motherboard is built for AMD Ryzen 9000, 8000 and 7000 series processors, delivering DDR5 performance, PCIe 4.0 support and 2.5Gb Ethernet connectivity. Ideal for gaming and productivity builds, it offers reliable stability, advanced cooling features and next-gen upgrade potential for modern PC systems.
Features
General
| SKU | CF2-84C-13F |
Features
| Brand | Asus |
| Model Number | 90MB1PK0-M0EAY0 |
| Motherboard Chipset | B840 Chipset (Ryzen AM5) |
| CPU Socket Type | AM5 |
| Memory Type | DDR5 |
| Outputs | HDMI |
| Form Factor | Micro ATX |
| Key Features |
|
Description
The ASUS PRIME B840M-K AMD Ryzen DDR5 micro-ATX motherboard is designed for high-performance computing with AMD Ryzen 9000, 8000 and 7000 series processors on the AM5 socket. Built on the AMD B840 chipset, it delivers next-generation performance with support for high-speed DDR5 memory and advanced overclocking capabilities.
This motherboard features dual M.2 slots with PCIe 4.0 support, SATA 6Gb/s storage options and a PCIe 4.0 x16 slot for powerful graphics performance. With 2.5Gb Realtek Ethernet and ASUS LANGuard protection, it ensures fast and stable networking for gaming, streaming and productivity workloads.
Enhanced with ASUS 5X Protection III, Aura Sync RGB support and advanced cooling design, the PRIME B840M-K offers durability, stability and customisation for modern PC builds. It is an ideal choice for gamers and creators seeking a compact yet powerful AM5 platform motherboard.
Specification
Specifications
Product Name: ASUS PRIME B840M-K AMD Ryzen DDR5 Micro-ATX Motherboard
Model Number: 90MB1PK0-M0EAY0
Form Factor: Micro-ATX (24.4 cm x 22.1 cm)
Socket: AM5
Chipset: AMD B840
CPU Support: AMD Ryzen 9000, 8000 and 7000 series processors
CPU Power Support: Up to 170W
Memory:
2 x DDR5 DIMM slots
Max capacity: 128GB
Supports ECC and non-ECC unbuffered memory
Supports up to 8000+ MT/s (OC)
Dual-channel architecture
AMD EXPO and ASUS AEMP support
Graphics:
1 x HDMI 2.1 port (4K @ 60Hz, CPU-dependent integrated graphics required)
Expansion Slots:
1 x PCIe 4.0 x16 slot (x16 mode or x8/x4 depending on CPU)
1 x PCIe 3.0 x16 slot (x4 mode via chipset)
Storage:
2 x M.2 slots (PCIe 4.0 x4 support depending on CPU)
4 x SATA 6Gb/s ports
AMD RAIDXpert2 support (RAID 0/1/5/10)
Networking:
Realtek 2.5Gb Ethernet
ASUS LANGuard
USB Ports:
Rear: 4 x USB 5Gbps Type-A, 2 x USB 2.0 Type-A
Front: USB Type-C header (USB 5Gbps), USB 5Gbps header, 2 x USB 2.0 headers
Audio:
Realtek 7.1 Surround HD Audio codec
24-bit / 192 kHz playback support
Audio shielding and premium capacitors
Internal Connectors:
24-pin main power
8-pin CPU power
M.2 slots x2
SATA ports x4
USB headers and Type-C support
RGB headers (3 x Addressable Gen 2)
Fan headers (1 CPU, 3 chassis)
BIOS:
32MB UEFI AMI BIOS
ASUS EZ Flash 3 and CrashFree BIOS 3 support
Operating System Support:
Windows 10 64-bit, Windows 11
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