AsRock B850M Pro-A

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Regular price CHF 89.90
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  • Article number:
    90-MXBR8-A0UAYZ
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Technical Details

The ASROCK B850M Pro-A is a Micro-ATX motherboard with the mid-range AMD B850 chipset and AMD AM5 socket. It supports Ryzen 9000, 8000, and 7000 series CPUs.

Connection to graphics cards and NVMe SSDs is via PCIe 5.0. Data transfer rates of up to 10 Gbit/s are possible via USB 3.1.

To get the best out of your gaming PC, the CPU can be overclocked via the motherboard to higher clock speeds. This ensures a stable power supply to the processor, allowing even high-end CPUs to operate at full performance for extended periods. You can also fully utilize DDR5 memory with overclocking. In case of emergency, the ASROCK B850M Pro-A offers BIOS Flashback.

 

Key Information at a Glance
Processor Family AMD 7000 Series
Memory type DDR5 RAM
Motherboard Features
  • Front Panel Audio Connector
  • RGB Header
Internal connection options M.2 (3×), S-ATA III (4×), TPM header
Number of memory modules (RAM)
Item Number 53885128
General Information
Manufacturer AsRock
Category Motherboard
Manufacturer Number 90-MXBR8-A0UAYZ
Release Date 06.01.2025
Sales Rank (Motherboard Category) 286 of 991
Motherboard Properties
Form Factor Micro ATX (mATX)
Socket AM5
Chipset AMD B850
Motherboard Features
  • Front Panel Audio Connector
  • RGB Header
Operating System Compatibility Windows, Windows 10
BIOS Type UEFI AMI
Processor
Processor Family AMD 7000 Series
Memory
Memory form factor DIMM
Number of memory modules (RAM)
Max. memory (RAM) 256 GB
Memory chip DDR5 SDRAM
Max. RAM OC 8000 MHz
Supported memory speed 8000 MHz
Memory type DDR5 RAM
RAM buffer Unbuffered
Graphics features
Video connectors DisplayPort (1×), HDMI OUT (1×)
Video connector version DisplayPort 1.4, HDMI 2.1
Network
Network connectors RJ45 2.5 Gigabit Ethernet (1×)
Ethernet controller brand Realtek
Ethernet controller Dragon RTL8125BG
Max. port speed 2.50 Gbit/s
Audio
Chip Realtek ALC897
Audio channel 7.1 channel
Audio connectors 3.5mm line-in jack (1×), microphone
Data storage
RAID configuration 0, 1, 10
Internal interfaces
Internal connection options M.2 (3×), S-ATA III (4×), TPM header
Expansion slot PCI Express x16 (1×)
PCI Express version (max.) 5
Number of fan connectors 5
Other connectors
USB ports USB-A, USB-C
Exact USB ports USB-A 3.2 Gen 1 (2×), USB-A 3.2 Gen 2 (1×), USB-C 3.2 Gen 1 (1×)
Power supply
Power connectors 24-pin ATX, 4-pin Molex, 8-pin EATX 12V
Origin
Country of origin China
Voluntary climate contribution
CO₂ emissions 456.29 kg
Climate contribution CHF 5.98
Scope of delivery
Scope of delivery SATA cables, screws
Product dimensions
Length 244 mm
Width 244 mm
Height 244 mm
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