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Asus PRIME B850M-K, AMD B850, AM5, Micro ATX, 2 DDR5, HDMI, DP, 2.5G LAN, 2x M.2
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  • Asus PRIME B850M-K, AMD B850, AM5, Micro ATX, 2 DDR5, HDMI, DP, 2.5G LAN, 2x M.2

Asus PRIME B850M-K, AMD B850, AM5, Micro ATX, 2 DDR5, HDMI, DP, 2.5G LAN, 2x M.2

£140.53
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Stock status: Very low
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ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors.


The PRIME B850M-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.
 

  • AMD B850 mATX motherboard
  • DDR5
  • PCIe 5.0 Ready
  • Two M.2 slots
  • Realtek 2.5Gb Ethernet
  • DisplayPort
  • HDMI
  • Rear USB 10Gbps Type-A
  • Front USB 5Gbps Type-C
  • BIOS FlashBack
  • Aura Sync
 




 

Performance
  • AI Advisor - ASUS AI Advisor allows users to explore the functionality and advanced features of ASUS motherboards in a simple and straightforward way.
  • Digital Power Design - PRIME B850M-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.
  • Six-layer PCB design - The multi-layered printed circuit board design quickly dissipates heat around the voltage regulators to improve overall system stability and provide the CPU with more overclocking headroom.
  • Digi+ VRM control - The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings.
     





Enhanced Memory & Storage Performance
  • Enhanced DDR5 performance - Comprehensive memory tuning options are the cornerstone of PRIME motherboards. The PRIME B850M-K maximizes the potential of your DDR5 modules, from entry-level to extreme-speed kits. 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 B850M-K offers extensive AMD Extended Profiles for Overclocking (EXPO™) support and a wide array of UEFI settings for further performance tweaks
  • Two M.2 slots (up to 128Gbps) - PRIME B850M-K offers a total of two M.2 slots, including one that supports data-transfer speeds of up to 128 Gbps via PCIe 5.0, and one that support PCIe 4.0. This enables quicker boot-up and app load times with OS or application drives.
 
 
 


 
Cooler by design
 

The PRIME B850M-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.
  • ASUS Fan Xpert 2+ - ASUS Fan Xpert 2+ software provides comprehensive control over fans. An Auto-Tuning mode intelligently configures all parameters with a single click. There’s also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS.





 
Empowering connections
 

This motherboard offers a versatile range of connectivity, including support for PCIe 5.0 slot and an arsenal of USB ports which includes Type-C® connection.
  • Realtek 2.5Gb Ethernet - Realtek 2.5 Gb Ethernet reduces CPU overhead and offers exceptionally high TCP and UDP throughput for faster, smoother data transfers.
  • High Speed Transferring - Numerous USB ports support high-end rigs loaded with peripherals, including two rear USB Type-A ports with transmission speeds of up to 10Gbps and a front USB Type-C® connector with ultrafast USB 5Gbps for transmission speeds of up to 5Gbps.
 



 
Personalization
 

The PRIME B850M-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.
  • UEFI BIOS - The UEFI interface delivers easy-to-use configuration options for PC beginners, and advanced features for veterans.
  • ASUS DriverHub - Simplify driver management with automatic detection, one-click installation and update for smooth, efficient system performance.
  • Armoury Crate - Customize Aura Sync RGB and control ASUS devices. Includes product registration and updates.
  • Aura Sync - Complete RGB lighting control for enthusiast systems, ensuring seamless synchronization with compatible hardware.
  • Addressable Gen2 RGB headers - Three Addressable RGB Gen 2 headers detect LED counts on compatible RGB devices, automatically adjusting lighting effects accordingly.
 
 
 
 

 
DIY friendly
 

The PRIME B850M-K motherboard features EZ PC DIY innovations that simplify and speed up the PC building process, making DIY easy and convenient.
  • BIOS FlashBack - BIOS FlashBack™ simplifies BIOS updates. Just load the BIOS file onto a FAT32 USB stick, insert it into the BIOS FlashBack™ port, and press a button—no CPU or memory needed.
  • SafeSlot - PCIe 5.0 is twice as fast as PCIe 4.0. ASUS has adapted our SMT manufacturing for the faster SafeSlot, a reinforced metal sheath that ensures secure card installation and faster data speeds.
  • Q-LED Core - The Q-LED Core display produces color-coded lights during the Power-On Self-Test (POST) that can help you troubleshoot potential issues.
 
ASUS
90MB1LV0-M0EAY0
5 Items

Data sheet

.
1 x Front Panel Audio1 x S/PDIF Out1 x SPI TPM (14-1 pin)1 x 10-1 pin System Panel
Wireless
-
RAM Speeds
8200+MT/s(OC) with Ryzen 9000 CPUs8400+MT/s(OC) with Ryzen 8000 CPUs8000+MT/s(OC) with Ryzen 7000 CPUs
Accessories
2 x SATA 6Gb/s cables1 x I/O Shield1 x M.2 rubber package1 x Screw package for M.2 SSD1 x Quick start guide
USB Ports Supported
Rear:2 x USB 10Gbps Type-A2 x USB 5Gbps Type-A4 x USB 2.0Front:1 x USB 5Gbps Type-C2 x USB 5Gbps4 x USB 2.0
Storage
4 x SATA III2 x M.2Ryzen 9000 & 7000 Series CPUs:M.2_1 (2280) - PCIe 5.0 x4M.2_2 (2242/2260/2280) - PCIe 4.0 x4Ryzen 8000 Series CPUs:M.2_1 (2280) - PCIe 4.0 x4M.2_2 (2242/2260/2280) - PCIe 4.0 x4/x2
RAID
Ryzen 9000 Series CPUs: RAID 0/1/5/10Ryzen 8000 Series CPUs: RAID 0/1Ryzen 7000 Series CPUs: RAID 0/1/10
Warranty
3 Years
Motherboard Type
Desktop
Form Factor
Micro ATX
Socket
AMD AM5
Chipset
AMD B850
DDR Type
DDR5
RAM Technology
DDR5 (Dual Channel)ECC and Non-ECC Un-buffered DIMM*Supports AMD EXPOASUS AEMP*Non-ECC, un-buffered DDR5 memory supports On-Die ECC function
RAM Slots
2 x DIMM
Maximum Memory
128GB
LAN
2.5GB LAN
Audio
Realtek 7.1 Surround Sound High Definition Audio CODEC
Back Panel I/O Ports
2 x USB 10Gbps Type-A2 x USB 5Gbps Type-A4 x USB 2.01 x DisplayPort1 x HDMI1 x Realtek 2.5Gb Ethernet3 x Audio jacks1 x BIOS FlashBack button1 x PS/2 Keyboard/Mouse combo
Internal I/O Connectors
1 x 4-pin CPU Fan3 x 4-pin Chassis Fan1 x 24-pin Main1 x 8-pin +12V CPU2 x M.2 (Key M)4 x SATA 6Gb/s1 x USB 5Gbps Type-C1 x USB 5Gbps 2 x USB 2.03 x Addressable RGB Gen21 x Clear CMOS1 x COM Port
CPU Support
Click here for CPU support
Package Type
Retail
Graphics Ports
1 x HDMI1 x DisplayPort
Additional Features
See Overview
Graphics
Integrated GraphicsGraphics specifications may vary between CPU types
M.2 Slot(s)
Yes (M.2)
No. LAN Ports
1 x LAN
Max LAN Speed
2.5GB LAN
PCI/PCI Express
Ryzen 9000 & 7000 Series CPUs:1 x PCIe 5.0 x16 (supports x16 mode) Ryzen 8000 Series CPUs:1 x PCIe 4.0 x16 (supports x8/x4 mode)AMD B850 Chipset:1 x PCIe 4.0 x16 (support x4 mode)

Delivery date

Carrier Information Delivery
DPD Next Day Next Day (Orders Before 4PM)
* with direct payment methods (e.g. credit card)
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