ASUS Prime B550M-A WiFi II vs Prime B450M-A II Motherboard Comparison

ASUS Prime B550M-A WiFi II and ASUS Prime B450M-A II are both motherboards with the same Socket (AM4), Form factor (Micro ATX) and Audio Channels (7.1 Channels). The main differences are in Chipset, Supported Memory, Audio Chipset and LAN Chipset.

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ASUS Prime B550M-A WiFi II	ASUS Prime B450M-A II
Prices (Change region) In Stock $89.99 Last updated 24 minutes ago. In Stock Free shipping $89.99 Out of Stock Free shipping $94.99 In Stock Free shipping $104.99 In Stock $111.49 Show 2 more offers	Prices (Change region) In Stock $89.99 In Stock Free shipping $241.55
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Brand ASUS	Brand ASUS
Model PRIME B550M-A WIFI II 90MB19X0-M0AAY0 90MB19X0-M0EAY0	Model Prime B450M-A II 90MB15Z0-M0AAY0 90MB15Z0-MVAAY0
Release Date 📅 July 2022	Release Date 📅 October 2020
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews ★★★★☆ (1 reviews) Add a product review	User reviews ★★★★★ (3 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 ►
Socket AM4	Socket AM4
Form factor Micro ATX	Form factor Micro ATX
Chipset AMD B550	Chipset AMD B450
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	Supported Memory DDR4 2133Mhz 2400Mhz 2666Mhz 2800Mhz 3000Mhz 3200Mhz 3300Mhz 3400Mhz 3466Mhz 3600Mhz 3733Mhz 3866Mhz 4000Mhz 4400Mhz
* 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 7.1 Surround Sound High Definition Audio CODEC	Audio Chipset Realtek High Definition Audio CODEC
Audio Channels 7.1 Channels	Audio Channels 7.1 Channels
LAN Chipset Realtek 1Gb Ethernet	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 2 x USB 3.2 Gen 2 ports (2 x Type-A) 4 x USB 3.2 Gen 1 ports (4 x Type-A) 1 x D-Sub port 1 x DVI-D port 1 x HDMI port 1 x Wi-Fi Module 1 x Realtek 1Gb Ethernet port 3 x Audio jacks 1 x PS/2 Keyboard/Mouse combo port	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 BIOS FlashBack Button(s)
Wireless LAN Yes	Wireless LAN No
Wi-Fi Generation 6	Wi-Fi Generation -
PCI-Express x16 Slots 1	PCI-Express x16 Slots 1
PCI-Express x4 Slots 0	PCI-Express x4 Slots 0
PCI-Express x1 Slots 2	PCI-Express x1 Slots 2
SATA 6 Gbps Ports 4	SATA 6 Gbps Ports 6
SATA Express Ports 0	SATA Express Ports 0
M.2 Ports 2	M.2 Ports 1
M.2 Devices support 2242 / 2260 / 2280 / 22110 - M Key 2242 / 2260 / 2280 - M Key	M.2 Devices support 2242 / 2260 / 2280 / 22110 - M Key
RAM Slots 4	RAM Slots 4
Maximum Supported RAM 128 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