ASRock B850 PRO-A AMD AM5 ATX Motherboard

The ASRock B850 PRO-A delivers reliable performance for AMD Ryzen 9000, 8000, and 7000 Series processors. Built on the AMD B850 chipset with Socket AM5, this ATX motherboard combines stability with advanced connectivity for modern computing needs.

Robust Power Delivery System

Equipped with a 14+2+1 phase power design featuring 80A Dr.MOS for VCore, SOC, and MISC, the B850 PRO-A ensures stable power delivery during intensive workloads. The 8-layer PCB construction provides consistent signal traces and improved thermal performance, supporting memory overclocking and system stability. Hi-Density power connectors handle higher currents compared to traditional connectors, reducing risks during demanding operations.

DDR5 Memory Performance

Four DDR5 DIMM slots support dual-channel configurations up to 8000MHz+ (OC) with a maximum capacity of 256GB. Intel XMP and AMD EXPO profile support enables straightforward memory overclocking through pre-tested configurations, accommodating both ECC and non-ECC unbuffered memory modules.

Expansion and Storage Options

The motherboard features PCIe 5.0 x16 and PCIe 4.0 x16 slots with steel reinforcement for graphics cards and expansion cards. Storage capabilities include four M.2 slots: one Blazing M.2 (PCIe Gen5 x4) delivering 128Gb/s transfer speeds, two Hyper M.2 (PCIe Gen4 x4), and one Ultra M.2 (PCIe Gen3 x4). Four SATA III ports provide additional storage connectivity. RAID 0, 1, and 10 configurations are supported for both SATA and NVMe devices.

Connectivity Features

Realtek 2.5Gb/s LAN provides network bandwidth 2.5x faster than standard gigabit Ethernet. USB connectivity includes USB 3.2 Gen2x2 Type-C (20Gbps front panel), USB 3.2 Gen2 Type-C rear port, USB 3.2 Gen1 Type-C rear port, six USB 3.2 Gen1 ports, and nine USB 2.0 ports across front and rear panels. Graphics output options include HDMI and USB Type-C with DisplayPort alternate mode. Realtek ALC897 codec handles 7.1 channel HD audio.

Thermal Management

Aluminum heatsinks dissipate heat from critical components during sustained workloads. Seven fan headers (two CPU, four chassis, one AIO pump) support both PWM and DC modes with automatic detection. Fan-Tastic Tuning in ASRock A-Tuning software enables custom fan curves through a visual interface.

User-Friendly Features

BIOS Flashback allows BIOS updates using only a USB drive and power supply, without requiring CPU, RAM, or other components. Auto Driver Installer includes pre-installed LAN drivers for simplified setup. Polychrome RGB headers and addressable RGB headers support compatible LED devices with SignalRGB integration for unified lighting control.

Package Contents

Includes I/O shield, two SATA data cables, and M.2 mounting screw. Backed by a 3-year replacement warranty.