ASUS PRIME B450M-K II/CSM mATX Motherboard

ASUS Prime B450M II Series motherboards provide the solid foundation needed for your first build, plus flexibility to grow with your ambitions. We've melded all the good stuff that's packed into AMD Ryzen™ processors with essential ASUS design and engineering, so you benefit from industry-leading technologies — including automated system tuning, comprehensive cooling controls, and immersive onboard audio. When you build with an ASUS Prime B450M II Series motherboard, you build smart, easy and affordably.

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Product ID: 8928468173098
Vendor: Asus
Availability : In Stock Pre order Out of stock





AMD AM4 Socket for AMD Ryzen™ 5000 Series/4000 G-Series/3rd/2nd/1st Gen AMD Ryzen™/2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/Athlon™ with Radeon™ Vega Graphics Processors


AMD B450


2 x DIMM, Max. 64GB, DDR4 4400(O.C)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3400(O.C.)/3300(O.C.)/3200(O.C.)/3000(O.C.)/2933(O.C.)/2800(O.C.)/2666/2400/2133 MHz Un-buffered Memory, Dual Channel Memory Architecture, ECC Memory support varies by CPU


Integrated Graphics in the 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/Athlon™ with Radeon™ Vega Graphics Processors, 1 x D-Sub, 1 x DVI-D, 1 x HDMI™ port

Expansion Slots

1 x PCIe 3.0 x16 (x16 mode), 1 x PCIe 3.0 x16 (x8 mode), 1 x PCIe 3.0 x16 (x4 mode), 2 x PCIe 2.0 x1


1 x M.2 Socket 3, 4 x SATA 6Gb/s ports, RAID 0, 1, 10 support


Realtek® RTL8111H, ASUS LANGuard


Realtek ALC887/897 7.1-Channel High Definition Audio CODEC, LED-illuminated design, Audio Shielding, Premium Japanese audio capacitors, HD audio module support for 8-channel audio output

USB Ports

Rear: 4 x USB 3.2 Gen 1 Type-A, 2 x USB 2.0 Type-A; Front: 2 x USB 3.2 Gen 1, 4 x USB 2.0

Software Features

ASUS Exclusive Software, ASUS 5X PROTECTION III, ASUS Q-Design, ASUS Thermal Solution, ASUS EZ DIY, UEFI BIOS

Back I/O Ports

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

Internal I/O Ports

CPU Fan connector, Chassis Fan connector, USB 3.2 Gen 1 connector, USB 2.0 connector, M.2 Socket 3, SPI TPM header, COM port connector, SATA 6Gb/s connectors, S/PDIF out header, 24-pin EATX Power connector, 8-pin ATX 12V Power connector, Front panel audio connector, System panel, Clear CMOS jumper, COM port header, Speaker connector


User´s manual, I/O Shield, 2 x SATA 6Gb/s cable, M.2 Anchor, Supporting DVD



Operating System

Windows® 10 64-bit, Windows® 7 64-bit (requires AMD Ryzen™ 2nd Generation or Ryzen™ 1st Generation Processor)

Form Factor

mATX Form Factor, 8.9 inch x 8.7 inch (22.6 cm x 22.1 cm)


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