ASUS Prime B850-Plus Wi-Fi ATX Motherboard AM5 DDR5

The ASUS Prime B850-Plus Wi-Fi is an ATX motherboard for AMD Ryzen 9000 Series processors on the AM5 platform. It supports up to 256GB of DDR5 memory, offers PCIe 5.0 support, three M.2 slots, Wi-Fi 6E, and Realtek 2.5 Gigabit LAN, making it a capable and practical choice for mainstream AM5 builds.

UK-based seller
Tracked delivery across the UK
Genuine product from trusted distributors

Key Features

• Socket AM5 - compatible with AMD Ryzen 7000, 8000 and 9000 Series processors
• AMD B850 chipset
• ATX form factor, 305 x 244 mm
• 4 x DDR5 DIMM slots, Dual Channel, ECC/Non-ECC, up to 256GB, DDR5-8000 (OC)
• 1 x PCIe 5.0 x16, 1 x PCIe 4.0 x16 (x4 bandwidth), 2 x PCIe 3.0 x16 (x1 bandwidth)
• 3 x M.2 slots: 1 x PCIe Gen5 x4, 1 x PCIe Gen4 x4, 1 x PCIe Gen4 x2
• 4 x SATA 6Gb/s ports with RAID 0, 1, 5, 10 support
• Realtek 2.5 Gigabit LAN with ASUS LANGuard
• Wi-Fi 6E (802.11ax) with Bluetooth 5.3
• Realtek 7.1 HD Audio

Product Overview

The Prime B850-Plus Wi-Fi is a well-specified entry into the AM5 platform, offering a solid foundation for both new builds and upgrades. With support for up to 256GB of DDR5 memory and ECC compatibility, it suits both gaming and light workstation use. Three M.2 slots, including one PCIe Gen5 x4, provide fast and flexible storage options. Wi-Fi 6E covers the 2.4, 5, and 6GHz bands, and the BIOS Flashback button allows firmware updates without a CPU or memory installed. ASUS 5X Protection III components and a reinforced SafeSlot add to the board's long-term reliability.

Delivery and Fulfilment

This product is sold by TechFinder UK, a UK-based sole trader business. All hardware is sourced through established distribution partners. Orders are processed within 1-2 business days and delivered within 3-5 business days with tracked delivery across the United Kingdom.

Why Buy from TechFinder UK?

• UK-based sole trader - genuine products, real accountability
• Sourced through established distribution partners
• Secure checkout with buyer protection
• Tracked UK delivery - processed in 1-2 business days, delivered in 3-5 business days
• Pre- and post-purchase support available

Technical Specifications

• Socket: AM5
• Chipset: AMD B850
• Form Factor: ATX
• Dimensions: 305 x 244 mm
• Memory Type: DDR5, Dual Channel, ECC/Non-ECC, Unbuffered (UDIMM)
• Memory Slots: 4 x 288-pin DIMM
• Max Memory: 256GB
• Memory Speed: Up to DDR5-8000 (OC)
• PCIe Slots: 1 x PCIe 5.0 x16, 1 x PCIe 4.0 x16 (x4 bandwidth), 2 x PCIe 3.0 x16 (x1 bandwidth)
• M.2 Slots: 1 x PCIe Gen5 x4 (22-80), 1 x PCIe Gen4 x4 (22-80), 1 x PCIe Gen4 x2 (22-80)
• SATA: 4 x SATA 6Gb/s
• RAID: 0, 1, 5, 10
• LAN: Realtek 2.5GbE with ASUS LANGuard
• Wireless: Wi-Fi 6E (802.11ax), 2.4/5/6GHz
• Bluetooth: 5.3
• Audio: Realtek 7.1 HD Audio
• Rear I/O: 2 x USB 2.0, 2 x USB 3.2 Gen1 Type-A, 3 x USB 3.2 Gen2 Type-A, 1 x USB 3.2 Gen2 Type-C, 1 x DisplayPort 1.4, 1 x HDMI 2.1, 1 x RJ-45, Line In/Out/Mic, BIOS Flashback button
• Internal Headers: 3 x USB 2.0, 2 x USB 3.2 Gen1, 1 x USB4, 1 x Thunderbolt, 3 x ARGB Gen2, 4 x CHA_FAN, 1 x CPU Fan, 1 x CPU OPT, 1 x AIO Pump, 1 x Front Panel Audio, 1 x S/PDIF-Out, 1 x Chassis Intrusion, 1 x Clear CMOS, 1 x COM (Serial), 1 x TPM (SPI)
• Power Connectors: 1 x 24-pin ATX, 1 x 8-pin EPS, 1 x 4-pin ATX
• BIOS: 256Mb Flash ROM, UEFI AMI BIOS
• Board Weight: 1.05 kg
• Gross Weight: 1.64 kg
• Package Dimensions: 35.3 x 27.3 x 6.8 cm
• Warranty: 3 Years
• Package Contents: Motherboard, 2 x SATA 6Gb/s cables, 1 x ASUS WiFi Q-Antenna, 1 x M.2 rubber package, 3 x M.2 screw packages, 1 x Quick start guide

Product Identification

Model: PRIME B850-PLUS WIFI
MPN: 90MB1L80-M0EAY0
EAN: 4711387931509
UPC: 197105931503