A6421
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A6421 Find Another Model
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    BIOS & FIRMWARE

    • Driver & Tools
    • BIOS & FIRMWARE

    BIOS
    Update BIOS version: 0502 (for H110 Chipset)(For Kabylake)
    Version 0502
    4.1 MB
    2018/01/26

    Improve System Stability

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    Update BIOS version: 0502 (for B150 Chipset)(For Kabylake)
    Version 0502
    6.37 MB
    2018/01/26

    Improve System Stability

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    Update BIOS version: 0601 (for H110 Chipset)(For Kabylake)
    Version 0601
    4.19 MB
    2018/01/15

    Improve System Stability
    Note: Users must update to BIOS 0502 first, then update to BIOS 0601. Update will fail if not following this steps.

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    Update BIOS version: 0601 (for B150 Chipset)(For Kabylake)
    Version 0601
    6.39 MB
    2017/10/05

    Improve System Stability
    Note: Users must update to BIOS 0502 first, then update to BIOS 0601. Update will fail if not following this steps.

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    • Products certified by the Federal Communications Commission and Industry Canada will be distributed in the United States and Canada. Please visit the ASUS USA and ASUS Canada websites for information about locally available products.
    • All specifications are subject to change without notice. Please check with your supplier for exact offers. Products may not be available in all markets.
    • Specifications and features vary by model, and all images are illustrative. Please refer to specification pages for full details.
    • PCB color and bundled software versions are subject to change without notice.
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    • The terms HDMI and HDMI High-Definition Multimedia Interface, HDMI trade dress and the HDMI Logos are trademarks or registered trademarks of HDMI Licensing Administrator, Inc. in the United States and other countries.

    • Unless otherwise stated, all performance claims are based on theoretical performance. Actual figures may vary in real-world situations.

      The actual transfer speed of USB 3.0, 3.1, 3.2, and/or Type-C will vary depending on many factors including the processing speed of the host device, file attributes and other factors related to system configuration and your operating environment.

      * The testing regimen includes the requirements of both military-grade standards and ASUS quality tests, and varies depending on device. MIL-STD-810 testing is conducted on selected ASUS products only. These tests do not demonstrate fitness for military use, or adherence to US Department of Defense (DoD) contract requirements. Similarly, the test results should not be considered an indication or guarantee of future performance under the specified test conditions. Damage occurring under these test conditions – or any attempt to replicate them – would be considered accidental, and would not be covered by the standard ASUS warranty. Additional coverage is available with ASUS Premium Care.

      • Price may not include extra fee, including tax、shipping、handling、recycling fee.
      • For pricing information, ASUS is only entitled to set a recommendation resale price. All resellers are free to set their own price as they wish.