Introduction

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 RyzenT 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.

Tune It Your Way
Comprehensive controls form the foundation of the ASUS Prime series. The Prime B450M II motherboard packs flexible tools to tune every aspect of your system, enabling you to tweak performance settings to perfectly match the way you work - maximizing your productivity.

Cooler by Design
PRIME B450M-K II is engineered with an array of hybrid fan headers and features comprehensive cooling controls that are configurable via Fan Xpert software or via the UEFI BIOS, ensuring your rig stays cool and stable under intense workloads.

Build on a Solid Foundation
Prime B450M II motherboard provides all the fundamentals to boost daily productivity, so your system will be ready for action with stable power, intuitive cooling and flexible transfer options.

PCIe 3.0 M.2
(up to 32 Gbps)
Achieve speed with onboard M.2
M.2 Slot supports data-transfer speed up to 32Gbps via x4 PCI Express® 3.0 bandwidth. It's the perfect choice for an operating system or application drive, providing fast access to data.

Little Things Make a Big Difference
Prime B450M II series adds the nuanced details that improve every experience, from exclusive codecs that provide pristine audio quality to intuitive interface that let you customize your system to create a unique personal look.

Outstanding Audio
Combined onboard features deliver elevated audio
Intelligent design and premium hardware create audio quality unlike anything you've ever experienced.

Processor

Processor manufacturer

AMD

Processor socket

Socket AM4

Compatible processor series

AMD RyzenT 3, 2nd Generation AMD RyzenT 3, AMD RyzenT 5, 2nd Generation AMD RyzenT 5, AMD RyzenT 7, 2nd Generation AMD RyzenT 7, AMD RyzenT ThreadripperT, AMD RyzenT ThreadripperT: The Second Generation

Memory

Supported memory types

DDR4-SDRAM

Number of memory slots

2

Memory slots type

DIMM

ECC

Y

Supported memory clock speeds

2133,2400,2666,2800,2933,3000,3200 MHz

Maximum internal memory

64 GB

Unbuffered memory

Y

Storage controllers

Supported storage drive interfaces

M.2,PCI Express 3.0,SATA III

RAID levels

0,1,10

Internal I/O

USB 2.0 connectors

2

USB 3.2 Gen 1 (3.1 Gen 1) connectors

1

Number of SATA III connectors

4

S/PDIF out connector

Y

Audio connector

Y

Front panel audio connector

Y

ATX Power connector (24-pin)

Y

CPU fan connector

Y

Number of chassis fan connectors

2

Rear panel I/O ports

USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity

4

USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity

3

Ethernet LAN (RJ-45) ports

1

PS/2 ports quantity

2

VGA (D-Sub) ports quantity

1

DVI-D ports quantity

1

Headphone outputs

1

Microphone in

Y

Network

Ethernet LAN

Y

Ethernet interface type

Gigabit Ethernet

Wi-Fi

N

Features

Motherboard chipset

AMD B450

Audio chip

Realtek ALC887-VD2

Audio output channels

7.1 channels

Component for

PC

Motherboard form factor

micro ATX

Motherboard chipset family

AMD

Windows operating systems supported

Windows 10 x64,Windows 7 x64

Expansion slots

PCI Express x1 (Gen 2.x) slots

2

PCI Express x16 (Gen 3.x) slots

2

BIOS

BIOS type

UEFI AMI

BIOS memory size

128 Mbit

ACPI version

6.1

Weight & dimensions

Width

244 mm

Depth

244 mm

Packaging content

Cables included

SATA

Bundled software

Armoury Crate, AI Suite 3, Performance and Power, Saving Utility, TurboV EVO, EPU, DIGI+ VRM, Fan Xpert, PC Cleaner, EZ update, System Information, ASUS CPU-Z, AI Charger, ASUS EZ Installer, 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