ASUS PRIME B550M-K B550 AM4 4XDDR4-4600O.C. 1XPCIE4.0X16 HDMI-2.1 DVI-D D-SUB 4XSATA3R M.2 GBLAN MATX 90MB14V0-M0EAY0

CPU
Build in AMD AM4 Socket for 3rd Gen AMD Ryzen ™ and 3rd Gen AMD Ryzen ™ with Radeon ™ Graphics Processors

Chipset
AMD B550

Memory
3rd Gen AMD Ryzen ™ Processors
4 x DIMM, Max.128GB, DDR4 4600 (OC) / 4400 (OC) / 4266 (OC) / 4133 (OC) / 4000 (OC) / 3866 (OC) / 3733 (OC) / 3600 (OC) / 3466 (OC) / 3333 (OC) / 3200/3000/2800/2666/2400/2133 MHz Un-buffered Memory
3rd Gen AMD Ryzen ™ with Radeon ™ Graphics Processors
4 x DIMM, Max.128GB, DDR4 4800 (OC) / 4600 (OC) / 4466 (OC) / 4400 (OC) / 4266 (OC) / 4133 (OC) / 4000 (OC) / 3866 (OC) / 3733 (OC) / 3600 (OC) / 3466 (OC) / 3333 (OC) / 3200/3000/2800/2666/2400/2133 MHz Un-buffered Memory
Dual Channel Memory Architecture
ECC Memory (ECC mode) support varies by CPU.

Graphics
1 x D-Sub
1 x DVI-D
1 x HDMI 2.1 ( 4K @ 60HZ )

Expansion Slot
3rd Gen AMD Ryzen ™ Processors
1 x PCIe 4.0 x16 (x16 mode)
3rd Gen AMD Ryzen ™ with Radeon ™ Graphics Processors
1 x PCIe 3.0 x16 (x16 mode)
AMD B550 Chipset
2 x PCIe 3.0 x1

Storage
Total supports 2 x M.2 slot (s) and 4 x SATA 6Gb / s ports
3rd Gen AMD Ryzen ™ 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 support
3rd Gen AMD Ryzen ™ with Radeon ™ Graphics 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 support
AMD 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 support
4 x SATA 6Gb / s port (s),
Support Raid 0, 1, 10

LAN
Realtek RTL8111H 1Gb Ethernet
ASUS LANGuard

Audio
Realtek ALC887 7.1 Surround Sound High Definition Audio CODEC
- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking, up to 24-Bit / 192kHz playback
Audio Feature:
- LED-illuminated design
- Audio Shielding
- Dedicated audio PCB layers
- Premium Japanese audio capacitors

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 Software
Armory Crate
AI Suite 3
- Performance And Power Saving Utility
TurboV EVO
EPU
Digi + VRM
Fan Xpert 2+
- EZ update
ASUS CPU-Z
AI Charger
DAEMON Tools
Norton Anti-virus software (Free Trial for 60 days)
WinRAR
UEFI BIOS
ASUS 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 / O
ASUS Q-Design
- ASUS Q-DIMM
- ASUS Q-Slot
ASUS Thermal Solution
- Aluminum heatsink design
ASUS Lighting Control

Rear 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)

Internal I / O
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 header
4 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 connectors
1 x Front panel audio connector (s) (AAFP)
1 x Clear CMOS jumper (s)
1 x System panel connector
1 x COM port header
1 x Speaker connector

Accessories
User´s manual
I / O Shield
2 x SATA 6Gb / s cable (s)
1 x Supporting DVD
1 x M.2 SSD screw package (s)

BIOS
256 Mb Flash ROM, UEFI AMI BIOS

Manageability
WOL by PME, PXE

Card Size
mATX Form Factor
9.6 inch x 9.6 inch (24.4cm x 24.4cm)