Well-balanced 2020 ATX multi-purpose motherboard with AMD AM4 socket and mid-range B550 chipset. Designed to complete gaming systems, high-performance universal home PCs and entry-level workstations. Thanks to the reinforced PCI-E slot connector, it can work with massive and large-sized top-end discrete gaming video cards. It is positioned as a product of the middle price category.

Guaranteed compatible with AMD Ryzen 3000 (Matisse/Matisse Refresh, 7nm) and Ryzen 4000G (Renoir, 7nm) APUs. Unlike the previous generation models based on the B450 chipset), MSI B550-A PRO motherboard fully supports the high-speed PCI-E Gen 4.0 system interface, which allows you to 100% increase the speed of loading textures into progressive models of discrete graphics cards and speed up the exchange data with fast NVMe SSDs. With four DDR4 DIMM slots, you can install an impressive maximum total amount of RAM (up to 128 GB), which is more than enough for gaming, streaming and solving any household/professional tasks. It is also worth noting the presence of a high-speed network GbE LAN adapter Realtek 8111H and two digital video outputs (HDMI, DisplayPort).

All specifications

Specifications B550-A PRO

Main
Features	gaming for overclocking
Socket	AMD AM4
Form factor	ATX
VRM heatsink
Size (HxW)	305x244 mm


Chipset
Chipset	AMD B550
BIOS	Ami
UEFI BIOS


RAM
DDR4	4 slot(s)
Memory module	DIMM
Operation mode	2 channel
Max. clock frequency	4400 MHz
Max. memory	128 GB
XMP


Drive interface
SATA 3 (6Gbps)	6
M.2 connector	2
M.2	1xSATA/PCI-E 4x, 1xPCI-E 4x
M.2 SSD cooling
Integrated RAID controller	/ RAID 0, RAID 1 and RAID 10 /


Expansion slots
1x PCI-E slots	2
PCI-E 16x slots	2
PCI Modes	16x/4x
PCI Express	4.0
CrossFire (AMD)
Steel PCI-E connectors	/ PCI-E 4.0 /

Internal connections
TPM connector
USB 2.0	2
USB 3.2 gen1	1
USB C 3.2 gen1	1
RGB LED strip	3 / 2x3-pin RAINBOW LED, 1x4-pin RGB LED /


Video outputs
HDMI output
DisplayPort


Integrated audio
Audiochip	Realtek ALC892
Sound (channels)	7.1


Network interfaces
LAN (RJ-45)	1 Gbps
LAN ports	1
LAN controller	Realtek 8111H


External connections
USB 2.0	4
USB 3.2 gen1	2
USB 3.2 gen2	1
USB C 3.2 gen2	1
PS/2	1
BIOS FlashBack


Power connectors
Main power socket	24 pin
CPU power	8 pin
Fan power connectors	8
CPU Fan 4-pin	1
CPU/Water Pump Fan 4-pin	1
Chassis/Water Pump Fan 4-pin	6


Official Website	msi.com
Added to E-Catalog	may 2020

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
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	MSI B550-A PRO ProSeries Motherboard AMD Ryzen 5000 AM4 DDR4 PCIe 40 SATA 6Gb/s M2 USB 32 Gen 2 HDMI/DP ATX Support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with BIOS update.Audio ports (Rear) : Realtek ALC892... more/ALC897 Codec Supports dual channel DDR4 memory up to 128 GB (4400 MHz) Lightning Fast Game experience: PCIe 4.0, Lightning Gen 4 M.2 with M.2 Shield Frozr, AMD Turbo USB 3.2 GEN 2 Core Boost technology combines optimized power circuit layouts and digital power regulation which allows for precise and steady current delivery to the CPU AUDIO BOOST rewards your ears with studio grade sound quality for immersive gaming experiences Premium Thermal Solution: Heatsink thermal pad rated for 7W/mk and PCB with 2oz thickened copper Flash BIOS Button lets users flash the BIOS even without a CPU or memory Powerful Design: Core Boost, Digital PWM IC, 2oz Thickened Copper PCB, Creator Genie, DDR4 Boost Amazon.com Delivery: in USA Report	$109.99 Buy in shop

	B550-A PRO B550-A PRO Official partner MSI MSI.com Delivery: in USA Report	$109.99 Buy in shop

	MSI PRO B550-A PRO AM4 ATX AMD Motherboard AMD B550 Supports AMD Ryzen 5000 Series / 4000 G-Series / 3000 Series processors * * Not compatible with AMD Ryzen 5 3400G &... moreRyzen 3 3200G. DDR4 4400+ / 4266 / 4133 / 4000 / 3866 / 3733 / 3600 / 3466 / 3200 / 3066 / 3000 / 2933 / 2800 / 2667 by A-XMP OC MODE DDR4 3200 / 3066 / 3000 / 2933 / 2800 / 2667 / 2400 / 2133 / 1866 by JEDEC 1DPC 1R Max speed 4800 1DPC 2R max speed 3866 2DPC 1R max speed 4000 2DPC 2R max speed 3600 Newegg.com Delivery: in USA Report	$109.99 Buy in shop

	MSI B550-A PRO Series ATX AM4 Desktop Computer CPU Motherboard - B550APRO B550APRO MSI B550-A PRO ATX Motherboard PCIE gen 4 Buydig.com Delivery: in USA Report	$164.68 Buy in shop

	MSI B550-A PRO Desktop Motherboard - AMD B550 Chipset - Socket AM4 - ATX - 128 GB DDR4 SDRAM Maximum RAM - DIMM, UDIMM - 4 x 4 USB 2.0 ports offer the impressive data transfer speed of up to 60 Mb/sec ATX form factor brings a significant number of P... moreCI slots, expansion slots, and peripheral ports with an enhanced heat dissipation capability DDR4 SDRAM compatible slot - Installs memory that reduces processor's idle time and enhances computer's performance RAID supported levels provide data reliability and fault tolerance DisplayPort transmits both audio and video signals through a common channel to deliver versatile performance Compatible Ryzen 3 processor lets you perform all your computational tasks at a swift pace Officedepot.com Delivery: in USA Report	$164.49 Buy in shop