Product Support For
ASUS ExpertBook B5 (B5402C, 12th Gen Intel)Find Another Model
By registering your device, you can easily manage your product warranty, get technical support and keep track of your repair status.
Upgrade Warranty: Here.
* Please note that the availability of the Premium Care product lines might differ by country.
Register Product
  • FAQ
  • Manual & Document
  • Warranty
  • More Service

BIOS & FIRMWARE

One-click driver download and install
  • Driver & Tools
  • BIOS & FIRMWARE
B5402CBA

BIOS Update (Windows)
BIOS Update for Windows
Version 314
19.98 MB
2026/08/05
SHA-256 :5563039BAFBB42F3747A515FCFB395CDFEF3A54C3DE608BDAB33BE7C3F2DE315

Description :
It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on.
Caution! Active updates are possible during the Windows Update process!

(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)

Important Information:
Optimize system performance

Introduction :
- MyASUS in UEFI BIOS - Introduction

How to Install :
- How to update BIOS in Windows

FAQ :
- Troubleshooting - Laptop occurs black screen when the BIOS update process is interrupted
- The Firmware in Device Manager shows a yellow exclamation mark (yellow bang)

DOWNLOAD
SHOW MORE DESCRIPTION
BIOS Update for Windows
Version 313
19.94 MB
2026/03/25
SHA-256 :AF2DC80EB70225781ADC7105D3E3C59DA27F223B67DEC1684F76A65160360EC3

Description :
It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on.
Caution! Active updates are possible during the Windows Update process!

(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)

Important Information:
Optimize system performance
Security update

Introduction :
- MyASUS in UEFI BIOS - Introduction

How to Install :
- How to update BIOS in Windows

FAQ :
- Troubleshooting - Laptop occurs black screen when the BIOS update process is interrupted
- The Firmware in Device Manager shows a yellow exclamation mark (yellow bang)

DOWNLOAD
SHOW MORE DESCRIPTION
Show all
BIOS
BIOS for ASUS EZ Flash Utility
Version 314
18.02 MB
2026/08/05
SHA-256 :BFB12FB5B44A5F2D4B0A47BE221802A66E50536BBF43850C20A9541A4D79C48D

Description :
It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on.
Caution! Active updates are possible during the Windows Update process!

(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)

Important Information:
Optimize system performance

Introduction :
- MyASUS in UEFI BIOS - Introduction

How to Install :
- How to update BIOS with EZ Flash

FAQ :
- Troubleshooting - Laptop occurs black screen when the BIOS update process is interrupted

DOWNLOAD
SHOW MORE DESCRIPTION
BIOS for ASUS EZ Flash Utility
Version 313
17.98 MB
2026/03/25
SHA-256 :3738510EF289AAD72CFB40F8928991A67A21CD27FD6FBEDB95BDAA10C1DC7073

Description :
It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes, please do not turn off your computer during the process to avoid critical problem that system cannot be turned on.
Caution! Active updates are possible during the Windows Update process!

(UEFI is a firmware package that controls keyboard, monitor, disk and other hardware devices and provides software interface to help OS control hardware devices.)

Important Information:
Optimize system performance
Security update

Introduction :
- MyASUS in UEFI BIOS - Introduction

How to Install :
- How to update BIOS with EZ Flash

FAQ :
- Troubleshooting - Laptop occurs black screen when the BIOS update process is interrupted

DOWNLOAD
SHOW MORE DESCRIPTION
Show all
Firmware
ASUS Firmware assistant
Version V1.3.2.0
7.42 MB
2024/01/24
SHA-256 :A382AFEAF79661722841B7B6FFCC0EC0A778CE1314DD024A66DE228F19C97390
Severity : 
Critical


Description :
ASUS Firmware Utility is a software utility that will assist you in keeping the firmware of your ASUS devices up to date

Minimum OS Version :
Windows 10 64-bit 21H2
Windows 11 64-bit 21H2

DOWNLOAD
SHOW MORE DESCRIPTION
  • 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.
  • Brand and product names mentioned are trademarks of their respective companies.
  • 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.