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.
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.
Overvoltage Protection World-class circuit-protecting power design An exclusive circuit design with built-in voltage regulators to protect your motherboard from damage caused by unexpected high-level voltages from unstable or inferior power supplies.
DRAM Overcurrent Protection Short-circuit damage prevention Onboard resettable fuses prevent overcurrent and short-circuit damage. This extends beyond I/O ports to DRAM to safeguard the lifespan of your system and connected devices.
Stainless-Steel Back I/O 3X corrosion-resistance for greater durability Corrosion-resistant stainless-steel back I/O panels bonded with chromium oxide have a lifespan that's three times longer than ordinary panels.
LANGuard Pumped-up throughput 2.5X higher surge tolerance ASUS LANGuard is a hardware-level network protection feature that integrates advanced signal-coupling technology and premium anti-EMI surface-mounted capacitors to improve throughput and ensure a more reliable connection.
Specification:
| Internal I/O |
|---|
| Number of M.2 (M) slots |
2 |
| 12V power connector |
Yes |
| Supported storage drive interfaces |
M.2, PCI Express 3.0, PCI Express 4.0, SATA III |
| USB 2.0 connectors |
2 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors |
1 |
| TPM connector |
Yes |
| S/PDIF out connector |
Yes |
| Number of SATA III connectors |
4 |
| Number of EATX power connectors |
1 |
| Number of COM connectors |
1 |
| Number of chassis fan connectors |
2 |
| Front panel audio connector |
Yes |
| EPS power connector (8-pin) |
Yes |
| CPU fan connector |
Yes |
| ATX Power connector (24-pin) |
Yes |
| RGB LED pin header |
Yes |
| Technical details |
|---|
| Motherboard chipset family |
AMD |
| Motherboard chipset |
AMD B550 |
| Supported processor sockets |
Socket AM4 |
| Parallel processing technology support |
Not supported |
| HDMI version |
2.1 |
| Motherboard form factor |
micro ATX |
| Component for |
PC |
| Audio |
|---|
| Audio output channels |
7.1 channels |
| Performance |
|---|
| Supported storage drive types |
HDD & SSD |
| Motherboard chipset family |
AMD |
| Motherboard chipset |
AMD B550 |
| RAID levels |
0, 1, 10 |
| Windows operating systems supported |
Windows 10 x64 |
| Supported processor sockets |
Socket AM4 |
| Audio output channels |
7.1 channels |
| Motherboard form factor |
micro ATX |
| Component for |
PC |
| Processor |
|---|
| Processor manufacturer |
AMD |
| Compatible processor series |
AMD Ryzenâ„¢ 3, AMD Ryzenâ„¢ 5, AMD Ryzenâ„¢ 7, 3rd Generation AMD Ryzenâ„¢ 9, AMD Ryzen 9 5th Gen |
| Supported processor sockets |
Socket AM4 |
| Processor socket |
Socket AM4 |
| Memory |
|---|
| Number of memory slots |
4 |
| Memory slots type |
DIMM |
| Supported memory types |
DDR4-SDRAM |
| Memory channels |
Dual-channel |
| ECC |
Yes |
| Supported memory clock speeds |
2133,2400,2666,2800,3000,3200,3333,3466,3600,3733,3866,4000,4133,4266,4400,4466,4600,4800 MHz |
| Maximum internal memory |
128 GB |
| Unbuffered memory |
Yes |
| Storage controllers |
|---|
| Supported storage drive types |
HDD & SSD |
| Supported storage drive interfaces |
M.2, PCI Express 3.0, PCI Express 4.0, SATA III |
| RAID levels |
0, 1, 10 |
| Number of storage drives supported |
6 |
| RAID support |
Yes |
| Graphics |
|---|
| Parallel processing technology support |
Not supported |
| Maximum resolution |
3840 x 2160 pixels |
| 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 |
2 |
| USB connector type |
USB Type-A |
| WiFi-AP antenna jack |
1 |
| VGA (D-Sub) ports quantity |
1 |
| PS/2 ports quantity |
1 |
| Microphone in |
Yes |
| Headphone outputs |
3 |
| HDMI version |
2.1 |
| HDMI ports quantity |
1 |
| Ethernet LAN (RJ-45) ports |
1 |
| DVI-D ports quantity |
1 |
| Network |
|---|
| Ethernet LAN |
Yes |
| Wi-Fi |
Yes |
| Wi-Fi standards |
802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) |
| Wake-on-LAN ready |
Yes |
| LAN controller |
Realtek RTL8111H |
| Ethernet interface type |
Gigabit Ethernet |
| Bluetooth |
Yes |
| Bluetooth version |
5.0 |
| Top Wi-Fi standard |
Wi-Fi 5 (802.11ac) |
| WLAN controller model |
Realtek RTL8821CE |
| Features |
|---|
| Motherboard chipset family |
AMD |
| Motherboard chipset |
AMD B550 |
| Windows operating systems supported |
Windows 10 x64 |
| Supported processor sockets |
Socket AM4 |
| Audio output channels |
7.1 channels |
| Motherboard form factor |
micro ATX |
| Component for |
PC |
| Audio chip |
Realtek ALC887 / Realtek ALC897 |
| Harmonized System (HS) code |
84733020 |
| Expansion slots |
|---|
| Number of M.2 (M) slots |
2 |
| PCI Express x1 (Gen 3.x) slots |
2 |
| PCI Express x16 (Gen 3.x) slots |
1 |
| PCI Express x16 (Gen 4.x) slots |
1 |
| BIOS |
|---|
| BIOS type |
UEFI AMI |
| Clear CMOS jumper |
Yes |
| BIOS memory size |
256 Mbit |
| Video |
|---|
| Maximum resolution |
3840 x 2160 pixels |
| Software |
|---|
| Windows operating systems supported |
Windows 10 x64 |
| Drivers included |
Yes |
| Weight & dimensions |
|---|
| Width |
9.61" (244 mm) |
| Depth |
9.61" (244 mm) |
| Packaging content |
|---|
| Drivers included |
Yes |
| Cables included |
SATA |
