The ASUS PRIME B850M-K is a compact micro-ATX motherboard engineered for AMD Ryzen 9000, 8000, and 7000 Series processors on the AM5 platform. Powered by the AMD B850 chipset, it delivers reliable performance for gaming, productivity, and AI-ready computing with stable power delivery and efficient thermal management. Featuring an 8+2+1 phase digital power design, ASUS 5X Protection III technologies, reinforced SafeSlot protection, and VRM heatsinks, it is built for long-term durability and dependable everyday operation.
This motherboard supports high-speed DDR5 memory with AMD EXPO and ASUS Enhanced Memory Profile technologies for optimized performance. It also features PCIe 5.0 graphics and storage support, dual M.2 slots for fast NVMe SSD expansion, Realtek 2.5Gb Ethernet, USB 10Gbps connectivity, BIOS FlashBack, Aura Sync RGB lighting support, and ASUS-exclusive Q-Design installation features for easier PC building and upgrades. Its micro-ATX layout makes it ideal for compact gaming systems and efficient workstation builds.
Specifications
Specifications
Details
Model
ASUS PRIME B850M-K
CPU Socket
AMD AM5
Chipset
AMD B850
Supported Processors
AMD Ryzen 9000 / 8000 / 7000 Series
Memory Support
2 x DDR5 DIMM, Dual Channel
Maximum Memory
Up to 128GB DDR5
Memory Speed
Up to 9600+ MT/s (OC)
Expansion Slots
1 x PCIe 5.0 x16, 1 x PCIe 4.0 x16 (x4 mode)
M.2 Slots
2 x M.2 (1 x PCIe 5.0 + 1 x PCIe 4.0)
SATA Ports
4 x SATA 6Gb/s
LAN
Realtek 2.5Gb Ethernet (ASUS LANGuard)
Wireless
None
Display Outputs
1 x DisplayPort 1.4, 1 x HDMI 2.1
USB
2 x USB 10Gbps Type-A, 2 x USB 5Gbps Type-A, USB 2.0
Audio
Realtek 7.1 Surround High Definition Audio
Special Features
BIOS FlashBack, Aura Sync, ASUS 5X Protection III, Q-DIMM, Q-Slot
Cooling
VRM Heatsink Design, M.2 Heatsink, Fan Xpert 2+
Form Factor
Micro-ATX
Reviews
Delivery
We offer free delivery to Dubai, Abu Dhabi, Al Ain, Sharjah, Ajman, Ras Al Khaimah, Fujairah, Umm Al Quwain, UAE for ASUS PRIME B850M-K | AM5 mATX Motherboard. Delivery available to Saudi Arabia, Oman, Qatar, Kuwait, and Bahrain.