ExpiredAsus Prime B550M K AM4 mATX Motherboard

Chipset

AMD B550

Memory

3rd Gen AMD Ryzen™ Processors

4 x DIMM, Max. 128GB, DDR4   4600(O.C)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/

3733(O.C.)/3600(O.C.)/3466(O.C.)/3333(O.C.)/3200/3000/2800/2666/

2400/2133 MHz Un-buffered Memory *

Next Generation AMD Ryzen PRO Processors

4 x DIMM, Max. 128GB, DDR4   4800(O.C.)/4600(O.C)/4466(O.C.)/4400(O.C)/4266(O.C.)/4133(O.C.)

/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)

/3333(O.C.)/

3200/3000/2800/2666/2400/2133 MHz 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).

Graphic

1 x D-Sub

1 x DVI-D

1 x HDMI 2.1(4K@60HZ)

Expansion Slots

3rd Gen AMD Ryzen™ Processors

1 x PCIe 4.0 x16 (x16 mode)

AMD B550 Chipset

2 x PCIe 3.0 x1

Storage

Total supports 2 x M.2 slots and 4 x SATA 6Gb/s ports

3rd Gen AMD Ryzen™ Processors :

1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4   and SATA modes) storage devices support

AMD B550 Chipset :

1 x M.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

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

* 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)

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

Operating System   Support

Windows® 10 ,   64bit

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)

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 & PCIe 4.0 x4 mode)

1 x M.2 Socket 3 with M key, type 2242/2260/2280 storage devices   support (SATA & PCIE 3.0 x 4 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)package(s)

BIOS

256 Mb Flash ROM, UEFI AMI BIOS

Form Factor

mATX Form Factor

9.6 inch x 9.6   inch ( 24.4 cm x 24.4 cm )