AMD B450 (Ryzen AM4) micro ATX motherboard with M.2 support, HDMI/DVI-D/D-Sub, SATA 6 Gbps, 1 Gb Ethernet, USB 3.2 Gen 1 Type-A, BIOS FlashBack

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.

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.

All-around Energy Efficiency    
With the Energy Processing Unit (EPU), you’ll enjoy system-wide power savings. The EPUautomatically optimizes power consumption and maximizes savings with Away mode.

Precise Digital Power Control    
The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switchingfrequency and power-efficiency settings. It also allows you to fine-tune your CPU for ultimate stabilityand performance.

Processor
Compatible processor series	AMD Ryzen™ 3, 2nd Generation AMD Ryzen™ 3, AMD Ryzen™ 5, 2nd Generation AMD Ryzen™ 5, AMD Ryzen™ 7, 2nd Generation AMD Ryzen™ 7, AMD Ryzen™ Threadripper™, AMD Ryzen™ Threadripper™: The Second Generation
Processor socket	Socket AM4
Processor manufacturer	AMD

Memory
Unbuffered memory	Yes
Maximum internal memory	64 GB
Supported memory clock speeds	2133,2400,2666,2800,2933,3000,3200 MHz
ECC	Yes
Memory slots type	DIMM
Number of memory slots	2
Supported memory types	DDR4-SDRAM

Storage controllers
RAID levels	0, 1, 10
Supported storage drive interfaces	M.2, PCI Express 3.0, SATA III

Internal I/O
Number of chassis fan connectors	2
CPU fan connector	Yes
ATX Power connector (24-pin)	Yes
Front panel audio connector	Yes
Audio connector	Yes
S/PDIF out connector	Yes
Number of SATA III connectors	4
USB 3.2 Gen 1 (3.1 Gen 1) connectors	1
USB 2.0 connectors	2

Rear panel I/O ports
Microphone in	Yes
Headphone outputs	1
DVI-D ports quantity	1
VGA (D-Sub) ports quantity	1
PS/2 ports quantity	2
Ethernet LAN (RJ-45) ports	1
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity	3
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	4

Network
Wi-Fi	No
Ethernet interface type	Gigabit Ethernet
Ethernet LAN	Yes

Features
Windows operating systems supported	Windows 10 x64, Windows 7 x64
Audio output channels	7.1 channels
Audio chip	Realtek ALC887-VD2
Motherboard chipset	AMD B450
Motherboard chipset family	AMD
Motherboard form factor	micro ATX
Component for	PC

Expansion slots
PCI Express x16 (Gen 3.x) slots	2
PCI Express x1 (Gen 2.x) slots	2

BIOS
ACPI version	6.1
BIOS memory size	128 Mbit
BIOS type	UEFI AMI

Logistics data
Harmonized System (HS) code	84733020

Weight & dimensions
Height	259 mm
Depth	244 mm
Width	244 mm

Packaging content
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
Cables included	SATA

Other features
Weight	840 g