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Asus PRIME B840M-K (90MB1PK0M0EAY0)

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Asus PRIME B840M-K
Towards:home / office
Form Factor:micro-ATX
Socket:AM5
Chipset:AMD B840
BIOS:Ami
RAM slots:DDR5 2 sl
RAM form factor:DIMM
RAM clock:8000 MHz
Sound (channels):7.1
Connectors:HDMI, M.2
Power connector:24-pin
Processor power:8-pin
All specifications
Specifications PRIME B840M-K
Main
Featuresfor home/office
SocketAM5
Form factormicro-ATX
Power phases11 / 8+2+1 /
VRM heatsink
Size (HxW)244x221 mm
Chipset
ChipsetAMD B840
BIOSAmi
UEFI BIOS
RAM
DDR52 slot(s)
Memory moduleDIMM
Operation mode2 channel
Max. clock frequency8000 MHz
Max. memory128 GB
EXPO support
Drive interface
SATA 3 (6Gbps)4
M.2 connector2
M.22xPCIe 4x
M.2 version2x4.0
Integrated RAID controller
Expansion slots
PCIe 16x slots2 pcs
PCIe modes16x/4x
PCIe support4.0
Steel PCIe connectors
Internal connections
TPM connector
USB-A 2.02 pcs
USB-A 5Gbps1 pcs
USB-C 5Gbps1 pcs
ARGB LED strip3
Video outputs
HDMI output
Integrated audio
AudiochipRealtek
Sound (channels)7.1
Network interfaces
LAN (RJ-45)2.5 Gbps
LAN ports1
LAN controllerRealtek
External connections
USB-A 2.02 pcs
USB-A 5Gbps4 pcs
Power connectors
Main power socket24-pin
CPU power8-pin
Fan power connectors4
CPU Fan 4-pin1
Chassis/Water Pump Fan 4-pin3
Official Websiteasus.com
Added to E-CatalogMarch 2026
P/N
90MB1PK0M0EAY0

The information in the model description is for reference purposes.
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Asus Asus PRIME B840M-K (Socket AM5) DDR5 Micro-ATX Motherboard 90MB1PK0-M0EAY0

Category Specification Model ASUS PRIME B840M-K CPU AMD Socket AM5Supports Ryzen™ 9000 / 80... more00 / 7000 Series Chipset AMD B840 Memory 2 x DIMM, max 128GB DDR5 Up to 8000+ MT/s (OC) Dual Channel, EXPO™, AEMP ECC & Non-ECC Unbuffered Graphics Output 1 x HDMI 2.1 (4K @ 60Hz, iGPU required) Expansion Slots 1 x PCIe 4.0 x16 (Ryzen 9000/7000) 1 x PCIe 4.0 x16 (x8/x4 with Ryzen 8000) 1 x PCIe 3.0 x16 (x4 mode) Storage 2 x M.2 PCIe 4.0 slots 4 x SATA 6Gb/s RAID RAID 0 / 1 / 5 / 10 (AMD RAIDXpert2) Ethernet Realtek® 2.5Gb Ethernet (ASUS LANGuard) USB (Rear) 4 x USB 5Gbps Type-A 2 x USB 2.0 Type-A USB (Front) USB-C 5Gbps header 2 x USB 5Gbps headers 4 x USB 2.0 via headers Audio Realtek® 7.1 HD Audio 24-bit / 192kHz playback Back Panel I/O HDMI, 6 x USB ports 2.5Gb LAN 3 x Audio jacks Internal Connectors 1 x CPU Fan, 3 x Chassis Fans RGB Gen 2 headers x3 TPM, COM, S/PDIF, CMOS BIOS 32MB UEFI AMI BIOS Form Factor Micro-ATX (9.6" x 8.7") Operating System Windows 11 / Windows 10 64-bit
Overclockers.co.uk
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ASUS PRIME B840M-K DDR5 Micro-ATX Socket AM5 Motherboard 90MB1PK0-M0EAY0

PRIME B40M-K ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen 9000 series pr... moreocessors. The PRIME B840M-K motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. Its designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications. AI Solutions ASUS AI Solutions include AI Cache Boost to supercharge large language model (LLM) workflows, ASUS AI Advisor as your technical expert with expertise in PC performance. AI Cache Boost Supercharge your large language model (LLM) workflows with AI Cache Boost. Exclusive to ASUS AMD 800 and 600 series motherboards that use Ryzen 9000 Series CPUs, this BIOS setting optimizes CPU cache and memory pathways to deliver up to 29% faster local LLM performance with high-speed memory tuning. Digital Power Design PRIME B840M-K features an 8+2+1 phase power design with discrete MOSFETs, ensuring efficient and stable power delivery for AMD processors plus steady performance for day-to-day use. Enhanced DDR5 performance Comprehensive memory tuning options are the cornerstone of PRIME motherboards. The PRIME B840M-K maximizes the potential of your DDR5 modules, from entry-level to extreme-speed kits.2 For entry-level modules without EXPO support, ASUS Enhanced Memory Profile (AEMP) automatically detects memory chips and provides optimized profiles for enhanced performance. For those looking to surpass stock DDR5 speeds, the PRIME B840M-K offers extensive AMD Extended Profiles for Overclocking (EXPO) support and a wide array of UEFI settings for further performance tweaks. Dual M.2 slots (up to 64Gbps) PRIME B840M-K offers two M.2 slots that support data-transfer speeds of up to 64 Gbps via PCIe 4.0, enabling quicker boot-up and app load times with OS or application drives. Cooler by design The PRIME B840M-K motherboard is engineered with multiple onboard heatsinks and an array of hybrid fan headers to help ensure your rig stays cool and stable under intense workloads. Realtek 2.5Gb Ethernet Realtek 2.5Gb Ethernet reduces CPU overhead and offers exceptionally high TCP and UDP throughput for faster, smoother data transfers Personalization The PRIME B840M-K enhances the user experience across the board, from simplifying BIOS setting adjustments to offering customizable RGB lighting controls for a uniquely personal system aesthetic. Aura Sync Outshine the Competition A well-tuned enthusiast system deserves a matching aesthetic. ASUS Aura offers full RGB lighting control with a variety of functional presets for the built-in RGB LEDs as well as strips and devices connected to the onboard RGB headers and it can all be synced with an ever-growing portfolio of Aura-capable hardware. DIY friendly The PRIME B840M-K motherboard features EZ PC DIY innovations that simplify and speed up the PC building process, making
Box.co.uk
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ASUS PRIME B840M-K AM5 DDR5 PCIe 4.0 Micro-ATX Motherboard

Scan.co.uk
Delivery: to United Kingdom
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£119.99

ASUS PRIME B840M-K AMD B840 Socket AM5 micro ATX 90MB1PK0-M0EAY0

B840M-K ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen 9000 series proces... moresors. The PRIME B840M-K motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. Its designed to be Advanced AI PC-ready offering the power and connectivity needed for demanding AI applications.
Quzo.co.uk
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ASUS PRIME B840M-K AMD B840 Socket AM5 micro ATX 90MB1PK0-M0EAY0

ASUS PRIME B840M-K AMD B840 Socket AM5 micro ATX
LaptopHub.uk
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