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Micro-ATX board in dark grey with black heatsinks, four DDR5 slots and three M.2 covers

ASRock Open box

ASRock B650M Pro RS Micro ATX AMD motherboard

SKU CH-V911-W13M5 MPN B650M Pro RS

Micro-ATX AM5 board with DDR5 support to 7200 MHz, PCIe Gen5 M.2, 2.5 GbE LAN and 7.1 audio for Ryzen 7000 and 9000 series CPUs

  • ProcessorSupports AMD Socket AM5 Ryzen 7000 Series Processors
  • ChipsetAMD B650
  • Form factorMicro ATX
  • CPU socketAM5
  • Memory slot count4 × 288pin (DDR5)
  • Supported memoryDDR5 6000+ (OC)
  • Supports AMD Ryzen 7000 and 9000 Series CPUs on AM5 socket
  • 8+2+1 Dr.MOS power phases deliver stable current to the processor
  • Four DDR5 slots accept up to 128 GB at 7200 MHz OC
  • PCIe Gen5 M.2 slot provides 128 Gb/s bandwidth for fast storage
  • 5 Gbps LAN plus 7.1-channel audio with Nahimic enhancement

AM5 Micro ATX Platform

The ASRock B650M Pro RS is a Micro ATX motherboard built around the AMD B650 chipset for Socket AM5 processors. It supports Ryzen 7000 and Ryzen 9000 series CPUs, though a BIOS update may be required for the newer series. The board delivers an 8+2+1 Dr.MOS power phase design and includes HDMI plus DisplayPort outputs for integrated graphics.

Suited for Compact DDR5 Builds

This board fits builders who want four DDR5 slots, a PCIe 5.0 M.2 slot and 2.5 Gbps LAN in a smaller chassis. It is less suitable for users needing multiple full-size PCIe 4.0 x16 slots or extensive rear I/O connectivity. The single PCIe 4.0 x16 slot and single PCIe 3.0 x4 slot limit multi-GPU or add-in card expansion.

PCIe 5.0 M.2 Decides Fit

The standout specification is the Blazing M.2 socket (M2_1) running at PCIe Gen5 x4 (128 Gb/s) for 2260/2280 NVMe drives. A second Hyper M.2 runs at Gen4 x4 (64 Gb/s) and a third at Gen4 x2 (32 Gb/s). If your primary storage drive needs Gen5 speed, this board provides it; otherwise a B650 board with only Gen4 M.2 may suffice.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $102.99
Cheaper than about 75% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASRock
Model nameB650M PRO RS
Processor
ProcessorSupports AMD Socket AM5 Ryzen 7000 Series Processors
CPU socketAM5
ChipsetAMD B650
Memory
Memory slot count4 × 288pin (DDR5)
Supported memoryDDR5 6000+ (OC)
Max supported RAM128 GB
Memory channelsDual Channel
Memory profilesIntel XMP 3.0 / AMD EXPO
ECC supportNon-ECC
BufferingUn-buffered
Storage
SATA ports4 x SATA 6Gb/s
M.2 slots1 x Blazing M.2 Socket (M2_1, Key M), supports type 2260/2280 PCIe Gen5 × 4 (128 Gb/s) mode*
1 x Hyper M.2 Socket (M2_2, Key M), supports type 2260/2280 PCIe Gen4 × 4 (64 Gb/s) mode*
1 x M.2 Socket (M2_3, Key M), supports type 2260/2280 PCIe Gen4 × 2 (32 Gb/s) mode*
SATA and RAID support0/1/10
Audio & video
Sound channels7.1 Channels
Connectivity
Ethernet controllerDragon RTL8125BG
Maximum network speed2.5 Gbit/s
Ports & slots
PCIe 4.0 x16 slots1 x PCIe 4.0 x16 Slot (PCIE1), supports x16 mode*
PCIe 3.0 x16 slots1 x PCIe 3.0 x16 Slot (PCIE2), supports x4 mode*
Additional slots* Supports NVMe SSD as boot disks
Rear panel ports2 x Antenna Mounting Points
1 x HDMI Port
1 x DisplayPort 1.4
1 x USB 3.2 Gen2 Type-A Port (10 Gb/s)
1 x USB 3.2 Gen2 Type-C Port (10 Gb/s)
2 x USB 3.2 Gen1 Ports
4 x USB 2.0 Ports
1 x RJ-45 LAN Port
1 x BIOS Flashback Button
HD Audio Jacks: Line in / Front Speaker / Microphone
Onboard USB headers2 x USB 2.0 Headers (Support 4 USB 2.0 ports)
2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports)
1 x Front Panel Type C USB 3.2 Gen1 Header
Power
Power connectors1 × 24 pin ATX Power Connector
1 × 8 pin 12 V Power Connector (Hi-Density Power Connector)
Size & build
Form factorMicro ATX
Width and length9.6 in × 9.6 in
Shipping weight1.81 kg
Package size275 × 260 × 60 mm

Questions about this item

How does the PCIe Gen5 x4 M.2 slot perform inside a working PC?

The Blazing M.2 socket delivers up to 128 Gb/s bandwidth for a single NVMe drive, so large game loads and heavy file transfers run at the drive's rated speed rather than being limited by the motherboard.

What does the 2.5 Gbps LAN port actually cap at in daily use?

The Dragon RTL8125BG controller tops out at 2.5 Gbps, so wired transfers will not exceed that ceiling even if your router or switch supports faster rates.

What physical space does the board need to mount in a chassis?

It follows the Micro ATX form factor with four mounting holes and a standard I/O shield cut-out, fitting any case designed for that size.

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