ASUS PRIME B550M-A WIFI II AMD B550 Socket AM4 micro ATX

SKU

90MB19X0-M0EAY0

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AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, Wi-Fi 6, 1 Gb Ethernet, HDMI, DVI-D, D-Sub, SATA 6 Gbps, USB 3.2 Gen 2 Type-A, and Aura Sync RGB lighting support

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AMD AM4 Socket: Ready for RyzenTM 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors
Comprehensive Cooling: VRM heatsink, PCH heatsink, hybrid fan headers, and Fan Xpert 2+ utility
Ultrafast Connectivity: Dual M.2, PCIe 4.0, Wi-Fi 6, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A support
Aura Sync RGB Lighting: Onboard addressable Gen 2 header and RGB headers for RGB LED strips, easily synced with Aura Sync-capable hardware

Specifications

Internal I/O
Number of M.2 (M) slots	2
USB 3.2 Gen 2 (3.1 Gen 2) connectors	0
12V power connector	Yes
Supported storage drive interfaces	M.2, PCI Express 3.0, PCI Express 4.0, SATA III
USB 2.0 connectors	2
USB 3.2 Gen 1 (3.1 Gen 1) connectors	1
mSATA ports quantity	0
TPM connector	Yes
S/PDIF out connector	Yes
Number of SATA connectors	0
Number of SATA III connectors	4
Number of SATA II connectors	0
Number of EATX power connectors	1
Number of COM connectors	1
Number of chassis fan connectors	2
Front panel audio connector	Yes
EPS power connector (8-pin)	Yes
CPU fan connector	Yes
ATX Power connector (24-pin)	Yes
RGB LED pin header	Yes
Technical details
Motherboard chipset family	AMD
Motherboard chipset	AMD B550
Supported processor sockets	Socket AM4
Parallel processing technology support	Not supported
On-board graphics card	No
HDMI version	2.1
Motherboard form factor	micro ATX
Component for	PC
Audio
Audio output channels	7.1 channels
Performance
Supported storage drive types	HDD & SSD
Windows operating systems supported	Windows 10 x64, Windows 11 x64
Motherboard chipset family	AMD
Motherboard chipset	AMD B550
RAID levels	0, 1, 10
Supported processor sockets	Socket AM4
Audio output channels	7.1 channels
Motherboard form factor	micro ATX
Component for	PC
Processor
Processor manufacturer	AMD
Compatible processor series	AMD Ryzen 3000 Series, AMD Ryzen 5000 Series
Supported processor sockets	Socket AM4
Processor socket	Socket AM4
Memory
Number of memory slots	4
Memory slots type	DIMM
Supported memory types	DDR4-SDRAM
Memory channels	Dual-channel
Supported memory clock speeds	2133,2400,2666,2800,3000,3200,3333,3466,3600,3733,3866,4000,4133,4266,4400,4466,4600,4800,4866 MHz
Maximum internal memory	128 GB
Unbuffered memory	Yes
ECC сompatibility	ECC
Storage controllers
Supported storage drive types	HDD & SSD
Supported storage drive interfaces	M.2, PCI Express 3.0, PCI Express 4.0, SATA III
RAID levels	0, 1, 10
Number of storage drives supported	6
RAID support	Yes
Graphics
Parallel processing technology support	Not supported
On-board graphics card	No
Rear panel I/O ports
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	4
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity	0
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity	2
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity	0
USB connector type	USB Type-A
USB 2.0 ports quantity	0
WiFi-AP antenna jack	1
VGA (D-Sub) ports quantity	1
PS/2 ports quantity	1
Microphone in	Yes
Headphone outputs	1
HDMI version	2.1
HDMI ports quantity	1
Ethernet LAN (RJ-45) ports	1
DVI-D ports quantity	1

Network
Ethernet LAN	Yes
Wi-Fi	Yes
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax)
Wake-on-LAN ready	Yes
LAN controller	Realtek RTL8111H
Ethernet interface type	Gigabit Ethernet
Bluetooth	Yes
Bluetooth version	5.2
Top Wi-Fi standard	Wi-Fi 6 (802.11ax)
Features
Windows operating systems supported	Windows 10 x64, Windows 11 x64
Motherboard chipset family	AMD
Motherboard chipset	AMD B550
Supported processor sockets	Socket AM4
Audio output channels	7.1 channels
Motherboard form factor	micro ATX
Component for	PC
Harmonized System (HS) code	84733020
Product colour	Multicolour
Expansion slots
Number of M.2 (M) slots	2
PCI Express x1 (Gen 3.x) slots	2
PCI Express x16 (Gen 3.x) slots	1
PCI slots	0
PCI Express x16 (Gen 4.x) slots	1
BIOS
BIOS type	UEFI AMI
Clear CMOS jumper	Yes
BIOS memory size	256 Mbit
Software
Windows operating systems supported	Windows 10 x64, Windows 11 x64
Drivers included	Yes
Logistics data
Harmonized System (HS) code	84733020
Weight & dimensions
Height	67 mm
Weight	845 g
Width	244 mm
Depth	244 mm
Packaging content
Drivers included	Yes
Cables included	SATA
Other features
Height	67 mm
mSATA ports quantity	0
Weight	845 g
Packaging content	2 x SATA 6Gb/s cables 1 x ASUS Wi-Fi moving antennas 1 x I/O Shield 1 x M.2 SSD screw package 1 x Support DVD 1 x User manual

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Manufacturer	ASUS	Gigabyte	ASUS	Gigabyte	Gigabyte
Processor manufacturer	AMD	AMD	AMD	Intel	Intel
Motherboard form factor	micro ATX	ATX	ATX	micro ATX	micro ATX
Processor socket	Socket AM4	Socket AM4	Socket AM5	LGA 1700	LGA 1700
Supported memory types	DDR4-SDRAM	DDR4-SDRAM	DDR5-SDRAM	DDR4-SDRAM	DDR4-SDRAM
Component for	N/A	PC	PC	PC	PC
Number of memory slots	4 to 6	4 to 6	4 to 6	4 to 6	4 to 6