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.
All-around Energy Efficiency
With the Energy Processing Unit (EPU), you’ll enjoy system-wide power savings. The EPU automatically optimizes power consumption and maximizes savings with Away mode.
Flexible Cooling Controls
Fan Xpert 2+ software provides comprehensive control over system fans. Auto-Tuning mode intelligently configures all parameters with a single click. There’s also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS.
Precise Digital Power Control
The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings. It also allows you to fine-tune your CPU for ultimate stability and performance.
UEFI BIOS
The renowned ASUS UEFI BIOS provides everything you need to configure, tweak and tune your system. It offers intelligently simplified options for PC DIY beginners, as well as comprehensive features for seasoned veterans.
Advanced Tuning for Serious Tweakers
An intuitive Advanced mode offered via the UEFI lets you take complete control. A built-in search feature makes it easy to find options, and various Advanced functions let you intelligently make nuanced adjustments so you can dial in performance just the way you want.
Quick and Simple Setup
EZ mode displays vital settings and stats and also offers guided wizards, drag-and-drop functionality, and one-click application of important settings — all to help you get your rig up and running in no time.
Cool to the Core
Prime B450M II series is engineered with multiple onboard heatsinks and an array of hybrid fan headers to ensure your rig stays cool and stable under intense workloads.
VRM Heatsink and Thermal Pads
A VRM heatsink with underneath thermal pad improves heat transfer from the MOSFETs for better cooling performance.
Cooler by Design
Prime B450M-A II is engineered with an array of hybrid fan headers and features comprehensive cooling controls that are configurable via Fan Xpert 2+ 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 up to 22110 and 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.
USB 3.2 Gen 2
Type-A
Numerous USB ports support high-end rigs loaded with peripherals, including two rear-panel USB Type-A connectors with fast USB 3.2 Gen 2 connectivity for compatible cases.
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 RGB lighting controls 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.
Aura Sync
Outshine the Competition
A well-tuned enthusiast system deserves a matching aesthetic. ASUS Aura offers full RGB lighting control with a variety of functional presets for RGB LED strips connected to the onboard RGB headers. And it can all be synced with an ever-growing portfolio of Aura-capable hardware.
SafeSlot Core
Fortified PCIe slot prevents damage
SafeSlot Core is the ASUS-exclusive PCIe slot. Featuring a fortified design that’s anchored to the motherboard by a special hook, SafeSlot Core provides 1.6x stronger retention and 1.3x greater shearing resistance than standard expansion slots.
SPECIFICATIONS:
| Model | PRIME B450M-A II |
| CPU | AMD AM4 Socket for AMD Ryzen™ 5000 Series/ 5000 G-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 * |
| * Refer to www.asus.com for CPU support list | |
| Chipset | AMD B450 |
| Memory | 3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics Processors |
| 4 x DIMM, Max. 128GB, 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.)/2800(O.C.)/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). | |
| * The maximum memory frequency supported varies by processor. | |
| Graphic | 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 2.0b | |
| *Graphics specifications may vary between CPU types. | |
| Expansion Slots | 3rd/2nd/1st Gen AMD Ryzen™ Processors |
| 1 x PCIe 3.0 x16 (x16 mode) | |
| 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics Processors | |
| 1 x PCIe 3.0 x16 (x8 mode) | |
| AMD Athlon™ with Radeon™ Vega Graphics Processors | |
| 1 x PCIe 3.0 x16 (x4 mode) | |
| AMD B450 chipset | |
| 2 x PCIe 2.0 x1 | |
| Storage | Total supports 1 x M.2 slot(s) and 6 x SATA 6Gb/s ports |
| 3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics : *1 | |
| 1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode) | |
| Athlon™ with Radeon™ Vega Graphics Processors : *1 | |
| 1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA mode) | |
| 3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics Processors : | |
| 2 x SATA 6Gb/s port(s), | |
| Support Raid 0, 1, 10 | |
| AMD B450 chipset : | |
| 4 x SATA 6Gb/s port(s), | |
| Support Raid 0, 1, 10 | |
| LAN | Realtek® RTL8111H |
| ASUS LANGuard | |
| Audio | Realtek ALC887/897 7.1-Channel 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 (up to 10Gbps) 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) | |
| 4 x USB 2.0 port(s) | |
| Software Features | ASUS Exclusive Software |
| Armoury Crate | |
| – AURA Creator | |
| – AURA Sync | |
| AI Suite 3 | |
| – Performance and Power Saving Utility | |
| TurboV EVO | |
| EPU | |
| DIGI+ VRM | |
| Fan Xpert 2+ | |
| 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 | |
| ASUS 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 EZ DIY | |
| – BIOS FlashBack™ button | |
| – BIOS FlashBack™ LED | |
| AURA Sync | |
| – AURA RGB header | |
| ASUS Lighting Control | |
| 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) | |
| 1 x BIOS FlashBack™ Button(s) | |
| Internal I/O Ports | 1 x CPU Fan connector(s) (1 x 4 -pin) |
| 2 x Chassis Fan connector(s) (2 x 4 -pin) | |
| 1 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s) (19-pin) | |
| 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 3.0 x 4 mode) | |
| 1 x SPI TPM header | |
| 1 x COM port(s) connector(s) | |
| 6 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 ATX 12V Power connector(s) | |
| 1 x Front panel audio connector(s) (AAFP) | |
| 1 x System panel(s) | |
| 1 x Clear CMOS jumper(s) | |
| 1 x COM port header | |
| 1 x Speaker connector | |
| 1 x RGB Header | |
| Accessories | User´s manual |
| I/O Shield | 2 x SATA 6Gb/s cable(s) |
| 1 x M.2 Screw Package | |
| 1 x Supporting DVD | |
| BIOS | 256 Mb Flash ROM, UEFI AMI BIOS |
| Operating System | Windows® 10 64-bit |
| Windows® 7 64-bit *2 | |
| Form Factor | mATX Form Factor |
| 9.6 inch x 9.5 inch ( 24.4 cm x 24 cm ) | |
| Note | 1*The M.2 slot shares bandwidth with the SATA6G_5/6 ports, and therefore the SATA6G_5/6 ports cannot be used when an M.2 device is installed. |
| 2*To support Windows 7 64-bit, please install an AMD Ryzen™ 2nd Generation or Ryzen™ 1st Generation Processor. |
