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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

E-Catalog UK editor, Motherboards
Valerii Lenko, edited 30.03.2026
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
How to choose a motherboard?Motherboard is the main part of any computer. Here's how to choose the right one for work, play and entertainment

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The ASUS PRIME B840M-K AM5 micro-ATX motherboard is built for AMD Ryzen 9000, 8000 and 7000 series processors, delivering DDR... more5 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.
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ASUS PRIME B840M-K DDR5 Micro-ATX Socket AM5 Motherboard 90MB1PK0-M0EAY0

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Asus 90MB1PK0-M0EAY0

Discover the ultimate foundation for your next-generation PC build with the ASUS PRIME B840M-K, a masterfully crafted motherb... moreoard designed for the Components category. This board is the perfect starting point for both seasoned PC DIY builders and first-time creators, offering a potent blend of performance, stability, and intuitive control.B840M-K ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors.The PRIME B840M-K motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features.It´s designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.Engineered for the future of computing, the PRIME B840M-K is built around the cutting-edge AMD Socket AM5 platform, providing robust support for the latest AMD Ryzen 9000, 8000, and 7000 series processors. This ensures you have a clear upgrade path and access to the pinnacle of processing power for elite gaming, content creation, and complex AI workloads. The board's robust power design and comprehensive cooling solutions work in harmony to maintain peak performance and system stability, even when pushing your CPU to its limits.Experience a new era of memory performance with dual-channel DDR5 support. This next-generation memory technology delivers staggering data transfer rates, increased bandwidth, and superior power efficiency compared to its predecessors. Whether you´re multitasking with heavy applications, editing high-resolution video, or engaging in intense gaming sessions, the leap to DDR5 ensures a smoother, more responsive experience.Storage and connectivity are paramount, and the PRIME B840M-K excels with its versatile options. It features an ultra-fast M2 PCIe slot, allowing you to install cutting-edge NVMe SSDs for near-instantaneous boot times and application loading. For expanded storage capacity, multiple SATA ports are available, ready for your traditional SSDs and HDDs. This flexible combination allows you to build a storage hierarchy optimized for both speed and capacity.The versatile Micro ATX form factor strikes an ideal balance between a rich feature set and a compact footprint, making it a superb choice for a wide variety of PC case sizes. For connectivity, the board is equipped with 2.5 Gigabit Ethernet for blazing-fast, low-latency networking, ensuring a competitive edge in online gaming and rapid file transfers. High-quality audio is delivered through the onboard sound system, terminating in a standard audio Jack configuration for an immersive auditory experience in games and media.ASUS PRIME B840M-KTechnical Specifications:* Processor manufacturer: AMD* Processor socket: Socket AM5* Compatible processor series: AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series* Supported memory types: DDR5-SDRAM* Maximum internal memory: 128 GB* Memory slots type: DIMM* Supported storage
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ASUS PRIME B840M-K AMD B840 Socket AM5 micro ATX 90MB1PK0-M0EAY0

AMD Socket AM5 AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series. PC micro ATX AMD B840 7.1 channels. DDR5-... moreSDRAM 2 DIMM Maximum internal memory: 128 GB. HDD & SSD M.2, SATA III RAID support Number of storage drives supported: 6. BIOS type: UEFI AMI 256 Mbit. 2.5 Gigabit Ethernet. B840M-K. ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B840M-K motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.. Processor. Processor manufacturer. AMD. Processor socket. Socket AM5. Compatible processor series. AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series. Supported processor sockets. Socket AM5. Memory. Supported memory types. DDR5-SDRAM. Number of memory slots. 2. Memory slots type. DIMM. Memory channels. Dual-channel. ECC сompatibility. ECC & Non-ECC. Maximum internal memory. 128 GB. Unbuffered memory. Yes. Storage controllers. Supported storage drive types. HDD & SSD. Supported storage drive interfaces. M.2, SATA III. Number of storage drives supported. 6. Number of HDDs supported. 4. RAID support. Yes. RAID levels. 0, 1, 5, 10. Graphics. Parallel processing technology support. Not supported. Internal I/O. USB 2.0 connectors. 2. USB 3.2 Gen 1 (3.1 Gen 1) connectors. 2. Number of SATA III connectors. 4. S/PDIF out connector. Yes. Front panel audio connector. Yes. Front panel connector. Yes. ATX Power connector (24-pin). Yes. CPU fan connector. Yes. Number of chassis fan connectors. 3. EPS power connector (8-pin). Yes. 12V power connector. Yes. TPM connector. Yes. Number of COM connectors. 1. RGB LED pin header. Yes. Number of RGB LED pin headers. 3. Rear panel I/O ports. USB 2.0 ports quantity. 2. USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity. 4. Ethernet LAN (RJ-45) ports. 1. HDMI ports quantity. 1. Network. Ethernet LAN. Yes. Ethernet interface type. 2.5 Gigabit Ethernet. Wi-Fi. No. Top Wi-Fi standard. Not available. Features. Component for. PC. Motherboard form factor. micro ATX. Motherboard chipset family. AMD. Motherboard chipset. AMD B840. Audio output channels. 7.1 channels. Product colour. Black. Windows operating systems supported. Windows 10 x64, Windows 11. Expansion slots. PCI Express x16 (Gen 4.x) slots. 1. PCI Express x16 (Gen 3.x) slots. 1. Number of M.2 (M) slots. 2. BIOS. BIOS type. UEFI AMI. BIOS memory size. 256 Mbit. Packaging data. Package width. 270 mm. Package depth. 263 mm. Package height. 51.5 mm. Package weight. 1.02 kg. Weight & dimensions. Width. 244 mm. Depth. 221 mm. Packaging content. Screws included. Yes. Cables included. SATA
Backtotheoffice.co.uk
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ASUS PRIME B840M-K AMD B840 Socket AM5 micro ATX

ASUS PRIME B840M-K AMD B840 Socket AM5 micro ATX B840M-KASUS Prime series motherboards are expertly engineered to unleash the... morefull potential of AMD Ryzen™ 9000 series processors. The PRIME B840M-K motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready. offering the power and connectivity needed for demanding AI applications.
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