MSI B550M-A PRO vs ASUS Prime B550M-A AC Motherboard Comparison

MSI B550M-A PRO and ASUS Prime B550M-A AC are both motherboards with the same Socket (AM4), Form factor (Micro ATX) and Chipset (AMD B550). The main differences are in Supported Memory, Audio Chipset, Back I/O Ports and Wireless LAN.

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MSI B550M-A PRO	ASUS Prime B550M-A AC
Prices (Change region) Out of Stock Free shipping $94.99 Out of Stock Free shipping $94.99 Out of Stock + $3.99 Shipping $94.99 Out of Stock Free shipping $130.73 - Buy now Show 2 more offers	Prices (Change region) In Stock $97.09 Last updated 5 minutes ago. In Stock Free shipping $109.99 In Stock $109.99 Out of Stock Free shipping $143.10 Show 1 more offers
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Brand MSI	Brand ASUS
Model b550m-a pro	Model PRIME B550M-A AC 90MB15K0-M0EAY0
Release Date 📅 November 2020	Release Date 📅 July 2021
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews ★★★★☆ (4 reviews) Add a product review	User reviews ★★★☆☆ (6 reviews) Add a product review
Price history View Details ►	Price history View Details ►
Compatible PC parts Processors ► Memory ► Cases ► CPU Coolers ►	Compatible PC parts Processors ► Memory ► Cases ► CPU Coolers ►
Series PRO	Series -
Socket AM4	Socket AM4
Form factor Micro ATX	Form factor Micro ATX
Chipset AMD B550	Chipset AMD B550
Supported Memory DDR4 1866Mhz 2133Mhz 2400Mhz 2666Mhz 2800Mhz 2933Mhz 3000Mhz 3200Mhz 3466Mhz 3600Mhz 3733Mhz 3866Mhz 4000Mhz 4133Mhz 4266Mhz 4400Mhz 4600Mhz	Supported Memory DDR4 2133Mhz 2400Mhz 2666Mhz 2800Mhz 2933Mhz 3000Mhz 3200Mhz 3333Mhz 3400Mhz 3466Mhz 3600Mhz 3733Mhz 3866Mhz 4000Mhz 4133Mhz 4200Mhz 4266Mhz 4333Mhz 4400Mhz 4600Mhz 4800Mhz 4866Mhz
* 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 No	ECC RAM Support No
Audio Chipset Realtek ALC892/ALC897 Codec	Audio Chipset Realtek ALC887/897
Audio Channels 7.1 Channels	Audio Channels 7.1 Channels
LAN Chipset Realtek RTL8111H	LAN Chipset Realtek RTL8111H
Max LAN Speed 10/100/1000Mbps	Max LAN Speed 10/100/1000Mbps
SLI Support No	SLI Support No
CrossFire Support No	CrossFire Support No
RAID Support Yes	RAID Support Yes
Back Connect No	Back Connect No
Back I/O Ports 1 x DVI-D 1 x HDMI 1 x LAN (RJ45) 2 x PS/2 2 x USB 2.0/1.1 3 x Audio Jacks 4 x USB 3.2 Gen 1	Back I/O Ports 1 x PS/2 keyboard/mouse combo port(s) 1 x DVI-D 1 x D-Sub 1 x HDMI 1 x LAN (RJ45) port(s) 2 x USB 3.2 Gen 2 (teal blue) (2 x Type-A) 4 x USB 3.2 Gen 1 (blue) Type-A 3 x Audio jack(s) 1 x ASUS Wi-Fi Module
Wireless LAN No	Wireless LAN Yes
Wi-Fi Generation -	Wi-Fi Generation 5
PCI-Express x16 Slots 1	PCI-Express x16 Slots 1
PCI-Express x4 Slots 0	PCI-Express x4 Slots 0
PCI-Express x1 Slots 1	PCI-Express x1 Slots 2
SATA 6 Gbps Ports 4	SATA 6 Gbps Ports 4
SATA Express Ports 0	SATA Express Ports 0
M.2 Ports 1	M.2 Ports 2
M.2 Devices support 2242 / 2260 / 2280 - M Key	M.2 Devices support 2242 / 2260 / 2280 / 22110 - M Key 2242 / 2260 / 2280 / 22110 - M Key
RAM Slots 2	RAM Slots 4
Maximum Supported RAM 64 GB	Maximum Supported RAM 128 GB
Onboard USB 2.0 2	Onboard USB 2.0 2
Onboard USB 3.2 Gen 1 1	Onboard USB 3.2 Gen 1 1
Onboard USB 3.2 Gen 2 0	Onboard USB 3.2 Gen 2 0
Onboard USB 3.2 Gen 2x2 0	Onboard USB 3.2 Gen 2x2 0