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Product Overview

The Asus PRIME B850M-A WIFI is a micro ATX motherboard for AMD Socket AM5, built on the B850 chipset. It supports Ryzen 7000, 8000 and 9000 series processors, including X3D models, and has four DDR5 slots for up to 256 GB of memory at speeds up to DDR5-8000+ (OP). Storage options include three M.2 slots, with the first running at PCIe 5.0, plus four SATA III ports.

With a PCIe 5.0 x16 slot for the graphics card, 2.5 Gb Ethernet, Wi-Fi 6E and Bluetooth 5.3 built in, it suits compact gaming and general-purpose Ryzen builds that still need modern connectivity. It offers seven 4-pin PWM fan headers and three addressable RGB headers, and HDMI and DisplayPort outputs work with CPUs that have integrated graphics. Asus notes that a BIOS update may be needed to support the newest processors.

Specification

• Manufacturer: Asus
• Model: PRIME B850M-A WIFI
• MPN: 90MB1LN0-M0EAY0
• EAN: 4711636051125
• CPU socket: AMD Socket AM5
• Chipset: AMD B850
• Form factor: micro ATX (244 x 244 mm)
• Memory: 4x DDR5 DIMM, dual-channel, up to 256 GB, up to DDR5-8000+ (OP)
• Expansion slots: 1x PCIe 5.0 x16, 1x PCIe 4.0 x16 (x4 lanes), 1x PCIe x1
• M.2 slots: 3x M-key (Slot 1: PCIe 5.0, Slots 2 and 3: PCIe 4.0), 42-80 mm
• SATA: 4x SATA III, RAID 0/1/5/10
• LAN: Realtek 2.5 Gb Ethernet
• Wireless: Wi-Fi 6E, Bluetooth 5.3
• Rear USB: 2x USB 3.2 Gen 2 Type-A, 2x USB 3.2 Gen 1 Type-A, 4x USB 2.0
• Video outputs: 1x HDMI, 2x DisplayPort
• Audio: Realtek 7.1 channel codec
• Fan and RGB headers: 7x 4-pin PWM fan, 3x addressable RGB
• Power connectors: 24-pin ATX, 2x 8-pin 12V
• Weight: 930 g

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