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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.
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.
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.
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.
USB 3.2 Gen 1 Type-A
Numerous USB ports support high-end rigs loaded with peripherals, including four rear-panel USB Type-A connectors with fast USB 3.2 Gen 1 connectivity for compatible cases.
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.
Armoury Crate
Armoury Crate is a new software utility designed to give you centralized control of supported products, from a single intuitive interface. Armoury Crate provides control of settings for ASUS products, including keyboard and mouse preferences. This software even features dedicated product registration and highlight to help you stay in touch with the ASUS community.
BIOS FLASHBACK™
BIOS FlashBack™ is the simplest and safest (UEFI) BIOS update method. Simply drop the (UEFI) BIOS file onto a FAT32 formatted USB stick, plug it into the USB BIOS FlashBack™ port and press the button. Updates can even be performed without having memory or a CPU installed.
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.
ASUS Prime B450M-K II AMD Socket AM4 Motherboard
CPU
| CPU Socket | Socket AM4 |
| CPU Brand | AMD |
| Installed Processors (Max) | 0 (1) |
| Supported Processor Manufacturer | AMD |
| Supported Processors | 3rd/2nd/1st Gen AMD Ryzen/2nd and 1st Gen AMD Ryzen with Radeon Vega Graphics/Athlon with Radeon Vega Graphics Processors |
| 64-bit Support | Yes |
| Socket | AM4 |
Rear Panel I/O Ports
| USB Ports | 4 x USB 3.0 2 x USB 2.0 |
| HDMI Port | 1 x HDMI 2.0b |
| VGA Port | 1 x D-Sub |
| Keyboard/Mouse Combo Port | 1 x PS/2 |
| RJ-45 Ports | 1 x RJ-45 |
| Digital Port | 1 x DVI-D |
| Audio Line In Ports | 1 x 3.5mm Jack |
| Audio Line Out Ports | 1 x 3.5mm Jack |
| Microphone In Port | 1 x 3.5mm Jack |
Internal I/O Connectors
| SATA Connectors | 4 x SATA III |
| USB Connectors | 1 x USB 3.0 header (supports 2 ports) 2 x USB 2.0 headers (supports 4 ports) |
| Speaker | 1 x Speaker header |
| Front Panel Connectors | 1 x Front Panel 1 x Front Audio |
| Cooling Fan Support | 1 x CPU fan header 1 x Chassis fan header |
| S/PDIF Connectors | 1 x S/PDIF header |
| Serial Connectors | 1 x COM header |
| TPM Header | 1 x SPI TPM header |
| Power Connector Port | 1 x 20+4-pin ATX 1 x 4+4-pin EPS |
| Other Connectors | 1 x M.2, Socket 3, M Key (Type 2242/2260/2280) |
Memory
| Memory Bus Speed | 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 |
| Memory Type | DDR4 |
| Maximum RAM | 64 GB |
| Memory Slot | 2 x DIMM |
Motherboard
| Chipset Manufacturer | AMD |
| Northbridge | B450 |
| RAID Supported | Yes |
| RAID Format | RAID 0, 1, 10 |
| SATA Supported | Yes |
Expansion
| Number of PCI Express Slots | 1 x PCI Express 3.0 x16 2 x PCI Express 2.0 x1 |
Graphics Device
| Integrated Graphics Supported | Yes |
Sound
| Integrated Sound | Realtek |
Warranty
| Warranty | 3 Years |
Network
| Integrated Network | Realtek RTL8111H |
| Network Speeds Supported | 10/100/1000 Mbps |
| Wireless LAN | No |
| Bluetooth | No |
System Requirements
| Operating Systems Supported | Microsoft Windows 10 64-bit |
System
| BIOS | 256 Mb Flash ROM, UEFI AMI BIOS |
| Jumpers | 1 x Clear CMOS |
| Software Included (may be trial or restricted) | Yes |
| Drivers | Yes |
Physical
| Form Factor | MicroATX Motherboard |
| In The Box | Motherboard User Manual I/O Shield 2 x SATA Cables M.2 Anchor Support DVD |
| Width | 226 mm |
| Length | 221 mm |
Key Features
| RGB Header Type | None |
| Addressable RGB | No |
| Firewire | No |
| Wireless Network | No |
| Memory Channel | Dual |
| On-board Audio Type | 7.1 |
| Number of SATA Ports | 4 port(s) |
| Number of USB Ports | 6 port(s) |
| SATA III Support | Yes |
| USB 3.0 Support | Yes |
| Multi GPU Support | No |
| VGA Connection | Yes |
| DVI Connection | Yes |
| HDMI Connection | Yes |
| DisplayPort Connection | No |
| Motherboard Form Factor | mATX |
| Motherboard Power Connectors | 4 + 4-Pin |
| Motherboard Chipset | AMD B450 |
| Thunderbolt | No |
| Motherboard Model | ASUS Prime B450M-K II |
| USB 3.1 Support | No |
| Internal USB3.0 Header | Yes |
| M.2 Support | Yes |
| On-board RGB Control | None |
| Memory Speed | 4400 MHz |
Item Details
| Manufacturer | ASUS |
| Manufacturer Code | 90MB1600-M0EAY0 |
| Alternative Part Number | PRIME B450M-K II |
| EAN | 4718017932387 |
| Condition | New |
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