ASRock B850M Pro-A AMD AM5 Socket Motherboard, Micro-ATX, 4x DDR5 Slots, 3x M.2 Sockets, 2.5GbE LAN, 1x DisplayPort / 1x HDMI Port

ASRock B850M PRO A Micro ATX Motherboard (AMD B850, AM5)

The ASRock B850M PRO A is a Micro ATX motherboard designed for AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series processors, delivering solid power, fast storage, and extensive connectivity in a compact form factor.

Key Features

• AMD AM5 Support
• Supports AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series Processors

• AMD B850 chipset

• Robust Power Design

• 8 + 2 + 1 Power Phase Design with Dr.MOS for VCore + SOC + MISC

• Vcore with Dr.MOS design for smoother power delivery to the CPU

• High-Speed DDR5 Memory

• 4 x DDR5 DIMM slots
• Dual Channel DDR5 memory technology
• Supports DDR5 ECC/non-ECC, un-buffered memory up to 8000+ (OC)
• Maximum memory capacity: 256GB

• Supports XMP and EXPO memory profiles

• PCIe & Expansion

• 1 x PCIe 5.0 x16 slot (PCIE1), supports x16 mode
• 1 x PCIe 4.0 x4 slot (PCIE2), supports x4 mode
• 1 x M.2 Key E slot (type 2230) for WiFi/BT PCIe WiFi module

• 15µ gold contact in VGA PCIe slot (PCIE1)

• Integrated Graphics Support

• Integrated AMD RDNA graphics (actual support may vary by CPU)
• 1 x HDMI 2.1 TMDS/FRL 8G compatible, HDR, HDCP 2.3, up to 4K 120Hz

• 1 x DisplayPort 1.4 with DSC, HDCP 2.3, up to 4K 120Hz

• High-Speed M.2 & SATA Storage

• Supports up to 3 x NVMe M.2 SSDs
• 1 x Blazing M.2 (PCIe Gen5x4)
• 2 x Hyper M.2 (PCIe Gen4x4)
• 4 x SATA3 6.0 Gb/s connectors

• Supports NVMe SSDs as boot disks

• USB Connectivity

• Rear:
  • 1 x USB 3.2 Gen2 Type-C (10 Gb/s)
  • 1 x USB 3.2 Gen2 Type-A (10 Gb/s)
  • 2 x USB 3.2 Gen1 Type-A
  • 4 x USB 2.0
• Front (via headers):
  • 1 x USB 3.2 Gen1 Type-C
  • 4 x USB 3.2 Gen1 Type-A
  • 4 x USB 2.0
• USB 3.2 Gen2 Type-C: up to 10 Gb/s data transfer
• Front USB 3.2 Gen1 Type-C: up to 5 Gb/s data transfer

• All USB ports with ESD protection

• Networking

• Realtek 2.5G LAN (Dragon RTL8125BG), 10/100/1000/2500 Mb/s

• Dragon 2.5G LAN software with bandwidth control, usage statistics, optimized modes, and custom priority

• Audio

• Realtek ALC897 7.1 CH HD Audio Codec

• Lighting & Customization

• ASRock Polychrome SYNC
• 1 x RGB LED header
• 3 x Addressable LED headers

• RGB LED header enables easy creation of unique PC lighting styles

• Wireless-Ready

• 1 x M.2 Key E slot for WiFi upgrade

• 2 x antenna mounting points on rear panel

• Convenience & Troubleshooting

• BIOS Flashback support and dedicated button
• ASRock EZ Update
• ASRock Auto Driver Installer
• EZ Troubleshooter

• ASRock Post Status Checker

• Rock-Solid Durability & Productivity

• Superb Productivity (PCIe Gen5 graphics and M.2, Dual Channel DDR5)
• Rock-Solid Durability
• Ultrafast Connectivity (2.5G LAN)

Specifications

General

CPU Support

Memory

Expansion Slots

Graphics

Audio

LAN

USB

Rear Panel I/O

Storage

RAID

Internal Connectors & Headers

BIOS

Software & UEFI

Operating System Support

Certifications

Included Accessories

• 1 x I/O shield
• 2 x SATA data cables
• 1 x Screw for M.2 socket