ASUS PRIME B550M-A WIFI II AM4 B550 DUAL M.2 WIFI AURA MB PRIME B550M-A WIFI II 90MB19X0-M0EAY0

CPU



AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors

*Refer to www.asus.com for CPU support list.









Chipset



B550







Memory





4 x DIMM, Max. 128GB, DDR4



 



4866(OC)/4800(OC)/4600(OC)/4466(OC)/4400(OC)/4333(OC)/4266(OC)/4200(OC)/4133(OC)/4000(OC)/3866(OC)/3733(OC)/3600(OC)/3466(OC)/3400(OC)/3333(OC)/3200/3000/2933/2800/2666/2400/2133, Un-buffered Memory*



Dual Channel Memory Architecture



* ECC memory (ECC mode) support varies by CPU.



* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists), and memory frequency support depends on the CPU types.









Graphics





 



1 x D-Sub port



1 x DVI-D port



1 x HDMI® port**



* Graphics specifications may vary between CPU types.

** Supports 4K@60Hz as specified in HDMI 2.1.



 









Expansion Slots





AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors



1 x PCIe 4.0 x16 slot (supports x16 mode)



AMD Ryzen™ 5000 G-Series/ 4000 G-Series Desktop Processors 



1 x PCIe 3.0 x16 slot (supports x16 mode)



AMD B550 Chipset



2 x PCIe 3.0 x1 slots









Storage





 



AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors



M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4 & SATA modes)



AMD Ryzen™ 4000 G-Series Desktop Processors



M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 x4 & SATA modes)



AMD B550 Chipset



M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 & SATA modes)



4 x SATA 6Gb/s ports



Support RAID 0, 1, 10









Ethernet



1 x Realtek 1Gb Ethernet

ASUS LANGuard









Wireless & Bluetooth



2x2 Wi-Fi 6 (802.11 a/b/g/n/ac/ax) + BT5.2

Wi-Fi 6



2x2 Wi-Fi 6 (802.11 a/b/g/n/ac/ax)



Supports 2.4/5GHz frequency band



Bluetooth v5.2









USB





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 USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports



2 x USB 2.0 headers support additional 4 USB 2.0 ports









Audio





Realtek 7.1 Surround Sound High Definition Audio CODEC*



- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking



- Supports up to 24-Bit/192 kHz playback



Audio Features



- Audio Shielding



- LED-illuminated audio trace path design



- Premium audio capacitors



- Dedicated audio PCB layers



* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.









Back Panel 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









Internal I/O Connectors





Fan and Cooling related



1 x 4-pin CPU Fan header



1 x 4-pin CPU OPT Fan header



2 x 4-pin Chassis Fan headers



Power related



1 x 24-pin Main Power connector



1 x 8-pin +12V Power connector



Storage related



2 x M.2 slots (Key M)



4 x SATA 6Gb/s ports



USB



1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports



2 x USB 2.0 headers support additional 4 USB 2.0 ports



Miscellaneous



1 x Addressable Gen 2 header



2 x AURA RGB headers



1 x Clear CMOS header



1 x COM Port header



1 x Front Panel Audio header (AAFP)



1 x S/PDIF Out header



1 x Speaker header



1 x SPI TPM header (14-1pin)



1 x 10-1 pin System Panel header









Special Features





ASUS 5X PROTECTION III



- DIGI+ VRM



- LANGuard



- Overvoltage Protection



- SafeSlot Core



- Stainless-Steel Back I/O



ASUS Q-Design



- Q-DIMM



- Q-Slot



ASUS Thermal Solution



- VRM heatsink design



AURA Sync



- AURA RGB headers



- Addressable Gen 2 header









Software Features





ASUS Exclusive Software



Armoury Crate



- AURA Creator



- AURA Sync



AI Suite 3



- Performance and Power Saving Utility



TurboV EVO



EPU



DIGI+ VRM



Fan Xpert 2+



- EZ update



- Lighting Control



ASUS CPU-Z



AI Charger



DAEMON Tools



MyASUS



Norton Anti-virus software (Free Trial version)



WinRAR



UEFI BIOS



ASUS EZ DIY



- ASUS CrashFree BIOS 3



- ASUS EZ Flash 3



- ASUS UEFI BIOS EZ Mode









BIOS



256 Mb Flash ROM, UEFI AMI BIOS







Manageability



WOL by PME, PXE







Accessories





Cables



2 x SATA 6Gb/s cables



Miscellaneous



1 x ASUS Wi-Fi moving antennas



1 x I/O Shield



1 x M.2 SSD screw package



Installation Media



1 x Support DVD



Documentation



1 x User manual









Form Factor



microATX

24.4cm x 24.4cm