Name: ASRock B850 Pro-A AMD B850 Socket AM5 ATX Motherboard
Brand: ASRock

ASRock B850 Pro-A (AMD B850 Socket AM5 ATX) brings modern AM5 compatibility and versatile expansion to desktop builders seeking a balanced platform for Ryzen 7000–9000 series CPUs.

This ATX motherboard supports AMD processors with Socket AM5 and is built around the AMD B850 chipset, offering robust UEFI AMI firmware with 256 Mbit BIOS memory and certifications including FCC, CE and ErP/EuP.

Memory capacity and performance are strong points: four DIMM slots accept DDR5-SDRAM in dual-channel mode up to 256 GB, with support for both ECC and non‑ECC unbuffered modules for stability in demanding workloads.

Storage and expandability are comprehensive, with four M.2 slots (one supporting PCIe 5.0 x4, two at PCIe 4.0, and one at PCIe 3.0) plus four SATA III connectors and support for up to eight drives overall. Hardware RAID levels 0, 1 and 10 are available for performance and redundancy options.

Connectivity covers modern needs with multiple USB ports (including USB 3.2 Gen2 Type-C and Gen2x2 capability), a 2.5 Gigabit Ethernet port driven by the Dragon RTL8125BG, HDMI 2.1 output supporting up to 3840 x 2160 resolution with HDCP, and extensive audio via the Realtek ALC897 delivering 7.1 channels.

Cooling and case integration are well served by two CPU fan headers, four chassis fan connectors, one water pump connector, two 8‑pin EPS power connectors, a 24‑pin ATX connector and four RGB LED headers for lighting control. The board measures 305 x 244 mm and ships with SATA cables and mounting screws included.

Typical use cases include a high-performance productivity workstation with multiple NVMe drives, a content-creation PC that benefits from DDR5 and PCIe 5.0 storage, or a mid-to-high-end gaming rig paired with a Ryzen 7000/8000/9000 series CPU and a PCIe 5.0 GPU. The reliable feature set makes it a solid choice for builders who want futureproof I/O and flexible storage.