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BIOSTAR B450MH AM4 AMD B450 SATA 6Gb/s Micro ATX AMD Motherboard

ETA Date: 10/29/2021. Limit 2 per customer.
  • AMD B450
  • Supports AMD AM4 Socket for 3rd, 2nd and 1st Gen Ryzen / 2nd and 1st Gen Ryzen with Radeon Vega Graphics / Athlon with Radeon Vega Graphics Processors
  • DDR4 3200(OC)/ 2933/ 2667/ 2400/ 2133/ 1866
A motherboard is tilted toward the left


A Micro ATX Motherboard with Rich Features

The CPU socket and slots for RAM, SSD, and graphics card are all designed to interfacing with corresponding components fast. The adaptive networking intelligence ensures networking speed always keeps up with any loading level. Fast speed is only part of the story. The motherboard is DIY friendly and comes with comprehensive protection. From installation to maintenance, it won’t take a sweat.

AMD B450 chipset

Icon for AMD B450 chipset

AMD B450 is the high-end chipset for overclockers and tweakers who need robust platforms. This chip provides the ultimate low-level control to its users and delivers ultimate graphics card bandwidth.

Audio+ and Video+

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HD Audio

Provides high quality sound with minimal loss of audio fidelity.

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DirectX 12 introduces the next version of Direct3D, the graphics API at the heart of DirectX. Direct3D is one of the most critical pieces of a game or game engine, and we've redesigned it to be faster and more efficient than ever before. Direct3D 12 enables richer scenes, more objects, and full utilization of modern GPU hardware.

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Integrated HDMI with HDCP

Onboard HDMI connector allows full video & audio support. It has industry-leading high definition video quality.


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SmartSpeedLAN is a free software application which monitors and manages your PC's network behavior. With user-friendly GUI, it allows you to select and prioritize different types of network traffic, including gaming, media streaming, communications or web surfing. You can also set any specific applications, choosing to prioritize or block accordingly. SmartSpeedLAN can feature automatic management options that use adaptive networking intelligence to ensure that you are getting the best online experience possible.

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PCIe M.2

PCIe M.2 32Gb/s is the latest storage interface, which delivers the highest bandwidth and lower latency. It's 3 times faster compared with PCIe M.2 10Gb/s.

Icon for SATA III 6Gbps


SATA III 6Gbps provides a higher bandwidth to retrieve and transfer HD media. With this super speed data transfer, SATA III allows an incredible data boost which is 2x faster than the SATA 3Gbps.


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Super LAN Surge Protection

Super LAN Surge Protection provides LAN port with more advanced antistatic protection capabilities by adding an integrated chip to strengthen electrical stability and prevent damage from lightning strikes and electrical surges. SLSP (Super LAN Surge Protection) series motherboard upgrades the existing system protection standards with maximum 4X protection comparing to other board makers.

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ESD Protection

ESD (Electrostatic Discharge) is the major factor to destroy PC by electrical overstress (EOS) condition. ESD occurred when PC users touched any devices connected to PC, which may result in damage to motherboard or parts. ESD protection is designed to protect the motherboard and equipment from damage by EOS.

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USB Polyswitch

On-board dedicated power fuse helps prevent USB port failure. It prevents USB Port overcurrent, safeguards your system and prolongs device lifespan.

A surge happens when a USB connector is pugged in.
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OC / OV / OH Protection

BIOSTAR special circuit design detects overvoltage conditions and prevents voltage surges from spreading in real time. It also actively cuts off the overvoltage supply to protect your system. Over current protection helps prevent motherboard from damage during overclocking or when an unusual current comes. Over heat protection helps protect motherboard & CPU from burning when exceeding the temperature limitation.


Icon for BIO-Flasher


Update BIOS effortlessly from a USB flash disk before entering the OS. BIO-Flasher is a convenient BIOS update tool. You can update your BIOS with only a few clicks without preparing an additional floppy disk or other complicated flash utility.

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eHot-Line Utiltiy

Integrated e-service automatically sends your technical support request to Biostar Globe tech support without any delay.

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BIOScreen Utility

Personalize your desktop with customizable boot logo. BIOScreen is the new feature that lets you personalize and create your own style with unique, custom-made boot logo.

Warranty & Returns

Warranty, Returns, And Additional Information


  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details

Return Policies

  • Return for refund within: 30 days
  • Return for replacement within: 30 days
  • This item is covered by's Standard Return Policy