Asus Prime B550M-K - AMD B550 (Ryzen AM4) Micro ATX Motherboard
AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, 1 Gb Ethernet, HDMI/D-Sub/DVI, SATA 6 Gbps, USB 3.2 Gen 2 Type-A
- AMD AM4 socket:Ready for Ryzen™ 5000 Series/ 4000 G-Series/ 3000 Series Desktop Processors
- Comprehensive cooling:PCH heatsink and Fan Xpert 2+
- UltrafastDual M.2, PCIe 4.0, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A
- 5X Protection III:Multiple hardware safeguards for all-around system protection






SPECS:
CPU
AMD AM4 Socket for AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors ** Refer towww.asus.comfor CPU support list
Chipset
AMD B550
Memory
4 x DIMM, Max. 128GB, DDR4 4866(O.C)/4800(O.C.)/4600(O.C)/4466(O.C.)/4400(O.C)/4333(O.C.)/4266(O.C.)/4200(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3400(O.C.)/3333(O.C.)/3200/3000/2933/2800/2666/2400/2133 MHz Un-buffered Memory *Dual Channel Memory ArchitectureECC 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.
Graphic
1 x D-Sub1 x DVI-D1 x HDMI 2.1(4K@60HZ)*Graphics specifications may vary between CPU types.
Expansion Slots
AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors1 x PCIe 4.0 x16 (x16 mode)AMD Ryzen™ 5000 G-Series/ 4000 G-Series Desktop Processors1 x PCIe 3.0 x16 (x16 mode)AMD B550 Chipset2 x PCIe 3.0 x1
Storage
Total supports 2 x M.2 slot(s) and 4 x SATA 6Gb/s portsAMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors :1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes) storage devices supportAMD Ryzen™ 5000 G-Series/ 4000 G-Series Desktop Processors :1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 3.0 x4 and SATA modes) storage devices supportAMD B550 Chipset :1 x M.2_2 socket 3, with M Key, Type 2242/2260/2280 (PCIE 3.0 x4 and SATA modes) storage devices support4 x SATA 6Gb/s port(s),Support Raid 0, 1, 10
LAN
Realtek RTL8111H 1Gb EthernetASUS LANGuard
Audio
Realtek ALC887/897 7.1 Surround Sound High Definition Audio CODEC *- Supports : Jack-detection, Multi-streaming, Front Panel Jack-retasking, up to 24-Bit/192kHz playbackAudio Feature :- LED-illuminated design- Audio Shielding- Dedicated audio PCB layers- Premium Japanese audio capacitors* Choose the chassis with HD audio module in front panel to support 8-channel audio output.
USB Ports
Rear USB Port( Total 6 )2 x USB 3.2 Gen 2 port(s)(2 x Type-A)4 x USB 3.2 Gen 1 port(s)(4 x Type-A)Front USB Port( Total 6 )2 x USB 3.2 Gen 1 port(s)(2 x Type-A)4 x USB 2.0 port(s)(4 x Type-A)
Software Features
ASUS Exclusive SoftwareArmoury CrateAI Suite 3- Performance And Power Saving UtilityTurboV EVOEPUDigi+ VRMFan Xpert 2+- EZ updateASUS CPU-ZAI ChargerDAEMON ToolsNorton Anti-virus software (Free Trial for 60 days)WinRARUEFI BIOSASUS EZ DIY- ASUS CrashFree BIOS 3- ASUS EZ Flash 3- ASUS UEFI BIOS EZ Mode
ASUS Special Features
ASUS 5X PROTECTION III- ASUS DIGI+ VRM- ASUS LANGuard- ASUS Overvoltage Protection- ASUS SafeSlot Core- ASUS Stainless-Steel Back I/OASUS Q-Design- ASUS Q-DIMM- ASUS Q-SlotASUS Thermal Solution- Aluminum heatsink designASUS Lighting Control
Back I/O Ports
1 x PS/2 keyboard/mouse combo port(s)1 x DVI-D1 x D-Sub1 x HDMI1 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-A3 x Audio jack(s)
Internal I/O Ports
1 x CPU Fan connector(s)2 x Chassis Fan connector(s)1 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s)2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)1 x M.2 Socket 3 with M Key, type 2242/2260/2280/22110 storage devices support (SATA mode & X4 PCIE mode)1 x M.2 Socket 3 with M Key, type 2242/2260/2280 storage devices support (SATA mode & X4 PCIE mode)1 x SPI TPM header4 x SATA 6Gb/s connector(s)1 x S/PDIF out header(s)1 x 24-pin EATX Power connector(s)1 x 8-pin EATX 12V Power connectors1 x Front panel audio connector(s) (AAFP)1 x Clear CMOS jumper(s)1 x System panel connector1 x COM port header1 x Speaker connector
Accessories
User´s manualI/O Shield2 x SATA 6Gb/s cable(s)1 x Supporting DVD1 x M.2 SSD screw package(s)
BIOS
256 Mb Flash ROM, UEFI AMI BIOS
Manageability
WOL by PME, PXE
Operating System
Windows® 10 64-bit
Form Factor
mATX Form Factor9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )