ASRock B550M PRO4 Review & Specs

ASRock B550M PRO4 Micro ATX

ASRock B550M PRO4 Micro ATX

- ASRock

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  • Supports 3Rd Gen AMD AM4 Ryzen / Future AMD Ryzen Processors
  • 8 Power Phase Design, Digi Power
  • Supports DDR4 4733+ (OC)
  • 1 Pcie 4.0 X16, 1 Pcie 3.0 X16, 1 Pcie 3.0 X1, 1 M.2 Key E For Wifi
  • Graphics Output Options: HDMI, Displayport, D-Sub

Specifications Overview

Model B550M PRO4
Release Date June 2020

* First availability for purchase, it may not correspond to the actual market launch date.

Socket AM4
Form factor Micro ATX
Chipset AMD B550
Supported Memory DDR4:
2133Mhz 2400Mhz 2666Mhz 2933Mhz 3200Mhz 3466Mhz 3600Mhz 3733Mhz 3800Mhz 3866Mhz 4000Mhz 4133Mhz 4200Mhz 4266Mhz 4333Mhz 4400Mhz 4533Mhz
* High clock speeds may require enabling the XMP profile in the motherboard BIOS
** RAM support may also depend on the CPU memory controller
ECC RAM Support
* ECC memory support also depends on the CPU memory controller
Audio Chipset Realtek ALC1200
Audio Channels 7.1 Channels
LAN Chipset Realtek RTL8111H
Max LAN Speed 10/100/1000Mbps
SLI Support
CrossFire Support
RAID Support
Back I/O Ports
  • Antenna Bracket
  • 1 x PS/2 Mouse/Keyboard Port
  • 1 x D-Sub Port
  • 1 x HDMI Port
  • 1 x DisplayPort 1.4
  • 1 x USB 3.2 Gen2 Type-A Port (10Gb/s) (Supports ESD Protection)
  • 1 x USB 3.2 Gen2 Type-C Port (10Gb/s) (Supports ESD Protection)
  • 4 x USB 3.2 Gen1 Ports (ASMedia ASM1074 hub) (Supports ESD Protection)
  • 2 x USB 2.0 Ports (Supports ESD Protection)
  • 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
  • HD Audio Jacks: Line in / Front Speaker / Microphone
Wireless LAN
PCI-Express x16 Slots 2
PCI-Express x4 Slots 0
PCI-Express x1 Slots 1
SATA 6 Gbps Ports 6
SATA Express Ports 0
M.2 Ports 3
M.2 Devices support
  • 2280 - M Key
  • 2280 - M Key
  • 2230 - E Key
RAM Slots 4
Maximum Supported RAM 128GB
Onboard USB 2.0 2
Onboard USB 3.2 Gen 1 2
Onboard USB 3.2 Gen 2 0


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