Chipset: AMD B450

Dimensional format: mATX Form Factor (226 mm x 221 mm) Support for processors: 3rd/2nd/1st Gen AMD Ryzen™/2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/Athlon™ with Radeon™ Vega Graphics Processors Processor socket: AM4

Memory position: 2x DDR4 DIMM Memory support: 4400(OC)/4000(OC)/3866(OC)/3733(OC)/3600(OC)/3466(OC)/3400(OC)/3300(OC)/3200(OC)/3000 (OC)/2933(OC)/2800(OC)/2666/2400/2133 MHz Un-buffered Memory Max. size of operating memory: 64 GB Support for memory type: DDR4

• Dual Channel Memory Architecture
• ECC Memory (ECC mode) support varies by CPU

Graphics outputs:

• Integrated Graphics Processor (based on 2nd and 1st generation AMD processors with Radeon Grpahics/Athlon)

Sound card:

• Realtek 7.1-Channel High Definition Audio CODEC

Network card:

• Realtek® RTL8111H

Expansion Slots:

• 3rd/2nd/1st Gen AMD Ryzen™ Processors
• 1x PCIe 3.0 x16 (x16 mode)
• 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics Processors
• 1x PCIe 3.0 x16 (x8 mode)
• AMD Athlon™ with Radeon™ Vega Graphics Processors
• 1x PCIe 3.0 x16 (x4 mode)
• AMD B450 chipset
• 2x PCIe 2.0 x1

RAID controller: 0, 1, 10

SATA:

• 4x SATA 6Gb/s ports

M.2:

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

USB:

• rear USB ports (6 in total)
• 4x USB 3.2 Gen 1 port(s) (4 x Type-A)
• 2x USB 2.0 port(s) (2 x Type-A)
• front USB ports (6 in total)
• 2x USB 3.2 Gen 1 port(s)
• 4x USB 2.0 port(s)

Internal ports:

• 1x CPU Fan connector(s) (1 x 4-pin)
• 1x Chassis Fan connector(s) (1 x 4-pin)
• 1x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s) (19-pin)
• 2x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)
• 1x M.2 Socket 3 with M key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x 4 mode)
• 1x SPI TPM header
• 1x COM port(s) connector(s)
• 4x SATA 6Gb/s connector(s)
• 1x S/PDIF out header(s)
• 1x 24-pin EATX Power connector(s)
• 1x 8-pin ATX 12V Power connector(s)
• 1x Front panel audio connector(s) (AAFP)
• 1x System panel(s)
• 1x Clear CMOS jumper(s)
• 1x COM port header
• 1x Speaker connector

External ports:

• 1x PS/2 keyboard/mouse combo port(s)
• 1x DVI-D
• 1x D-Sub
• 1x HDMI
• 1x LAN (RJ45) port(s)
• 4x USB 3.2 Gen 1 (blue) Type-A
• 2x USB 2.0
• 3x Audio jack(s)
• 1x BIOS FlashBack™ Button(s)

Package contents:

• User manual
• I/O Shield
• 2x SATA 6Gb/s cable(s)
• 1x M.2 Anchor
• 1x Supporting DVD

BIOS: 256 Mb Flash ROM, UEFI AMI BIOS

Manufacturer page: https://www.asus.com/Motherboards/PRIME-B450M-K-II https://www.asus.com/microsite/motherboard/ASUS-motherboards-Win11-ready/ https://www.asus.com/support/FAQ/1046215