Does this support PCIe 5.0 graphics cards?

Yes, when paired with Ryzen 9000/7000 processors, the primary PCIe x16 slot supports PCIe 5.0 speeds.

What processors are compatible?

It supports AMD Ryzen 9000, 8000, and 7000 Series Desktop Processors on the AM5 socket.

No, the B850M-K does not have built-in Wi-Fi. It relies on a high-speed Realtek 2.5Gb Ethernet port for wired connectivity.

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Asus Prime B850M K Socket AM5 DDR5 PCIe 5.0 2.5G LAN Motherboard

Asus Prime B850M K Socket AM5 DDR5 PCIe 5.0 2.5G LAN Motherboard

5499 EGP

Part Number 90MB1LV0-M0EAY0
CPU Socket AM5 (Ryzen 9000 / 8000 / 7000 Series)
Chipset AMD B850
Memory Support 2x DDR5 DIMM, up to 9600+ MT/s (OC)
Primary Expansion Slot 1x PCIe 5.0 x16 (Gen 5 Ready)
Storage 2x M.2 Slots (1x PCIe 5.0 x4, 1x PCIe 4.0 x4)
Networking Realtek 2.5Gb Ethernet
Warranty 3 Years

In stock

Price Match Guarantee

Estimated delivery

Cairo, Giza & Alexandria within 2–3 business days

Other governorates within 3–5 business days

Business days after order confirmation.

Question about delivery or your order? 01021625421 WhatsApp

Warranty & return terms

SKU: 199291005518 Categories: MOTHERBOARD, AMD Motherboards Tags: PCIe 5.0, micro-ATX, B850M, 199291005518, B850M K, PC build, DDR5 RAM, Pcie, Asus Prime Series, Prime B850M K, Ryzen 9000 Ready, PRIME, Socket, HDMI 2.1, Business, 2 5G, M 2 Gen 5, DDR5, 2.5Gb Ethernet, K, AM5 Board, motherboard, ASUS, AMD B850, PCIe 5.0 x16, 2.5G LAN, gaming, AM5, 5.0, LAN, DESKTOP, 90MB1LV0-M0EAY0 Brand: ASUS

Asus Prime B850M K Socket AM5 DDR5 PCIe 5.0 2.5G LAN Motherboard

Unleash the full potential of your Ryzen 9000 series processor with the ASUS Prime B850M-K. This Micro-ATX motherboard combines robust power design, comprehensive cooling solutions, and intelligent tuning options, featuring PCIe 5.0 connectivity and DDR5 support.

B850

AMD Chipset

DDR5

OC Support

PCIe 5.0

Gen 5 Ready

2.5GbE

Fast LAN

Performance & Durability

Next-Gen Connectivity

Future-proof your build with a PCIe 5.0 x16 slot for the latest graphics cards and a PCIe 5.0 M.2 slot for blazing-fast NVMe storage speeds, ensuring maximum bandwidth for gaming and productivity.

DDR5 Performance

Take advantage of faster data transfer rates with DDR5 memory support. ASUS Enhanced Memory Profile (AEMP) and AMD EXPO allow you to easily overclock compatible kits for superior system responsiveness.

Comprehensive Cooling

Engineered with a VRM heatsink and M.2 heatsink to keep critical components cool under load. Fan Xpert 2+ software provides granular control over system fans for the perfect balance of noise and thermals.

Technical Specifications

Feature	Details
Model	PRIME B850M-K
Chipset	AMD B850
Socket	AM5 (Ryzen 9000/8000/7000)
Memory	2x DDR5 DIMM, Max 128GB
Expansion Slots	1x PCIe 5.0 x16, 2x PCIe 4.0 x16 (x4/x1 mode)
Storage	2x M.2 (1x PCIe 5.0 x4), 4x SATA 6Gb/s
Networking	Realtek 2.5Gb Ethernet
Rear USB	2x USB 10Gbps, 2x USB 5Gbps, 4x USB 2.0
Video Output	1x HDMI 2.1, 1x DisplayPort 1.4
Form Factor	Micro-ATX (24.4cm x 22.1cm)

💡 Pro Tip:

This board features a BIOS FlashBack™ button on the rear I/O. This allows you to update the BIOS using only a USB drive and power supply, ensuring compatibility with the latest Ryzen processors even without an older CPU installed.

Important Notice: All information, specifications, and images provided herein are for reference and illustrative purposes only. Visual representations may not be perfectly accurate. Product specifications, features, and appearance can vary by model and country, and are subject to change without notice by the manufacturer.

If you have suggestions, or if you notice an error or incorrect information in this draft, please help us improve by reporting it directly via our feedback form: Alfrensia.com – Website Feedback & Report Form.

MOTHERBOARD

MODEL	Prime B850M K
CHIPSET MANUFACTURERS	AMD
CPU Socket	AM5
Motherboard Chipset	B850
Motherboard Type	Micro ATX
CPU SERIES	AMD Ryzen 7000 Series & Ryzen 8000 & Ryzen 9000 Series Processors
Technology	DDR5
Memory Speed	8000 MHz, 8200 MHz, 9600 MHz
Max Memory Size	128 GB
Memory Slot	2
PCI-E X16	YES
PCI-E GEN	PCIe 4.0, PCIe 5.0
PCI-E Slots (M.2)	2
SATAIII	4x SATA 6.0 Gb/s
Communication module	Realtek 2.5Gb Ethernet
Part Number	90MB1LV0-M0EAY0
Warranty	3 Years

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Warranty & Purchase Terms

Warranty for this product: 3 Years (official agent warranty). Details
Immediate replacement: if a manufacturing defect appears at any time during the warranty, the product is replaced with a new one, no repair (except products that need software work). If no replacement is available, you get a full refund with no deductions. Details
Returns: don't need it? Return it within 30 days of purchase, as long as it is sealed, unopened and complete. Details
Inspecting the shipment: before you accept, look at the outer packaging. If the box is badly damaged (torn, wet, crushed or the tape is open) and shows signs of damage, refuse the shipment with the courier and call us right away on 01021625421. Don't open the product box before accepting. Details
After delivery: if you open it and find damage or missing parts inside, call us within 48 hours on 01021625421 and keep the box and photos or an unboxing video. Details
Not covered: misuse (burning, breaking, scratching, removing the warranty sticker), operating systems, software and generic accessories. Details
Important: keep the Alfrensia warranty sticker on the product and all box contents to benefit from the agent's warranty. Details
Payment & delivery: cash on delivery. Cairo, Giza & Alexandria within 2–3 business days, other governorates within 3–5 business days after order confirmation. Details
Refunds: your money is back within 2 business days of receiving the product, by InstaPay, wallet or bank transfer. Details
Your legal rights: all your rights under Egypt's Consumer Protection Law No. 181 of 2018 stay in full; the benefits above come on top. Details