This is essential for Fn key functions (brightness, volume, Wi-Fi toggle). Use the Windows 8 64-bit version from Asus’s support site. It installs without error on Windows 10.
The driver hunt is a one-time annoyance. By leveraging Windows 7/8.1 drivers, compatibility modes, and a few community workarounds (especially for the Intel HD 3000 graphics), you can achieve a rock-solid Windows 10 experience. Asus A53s Drivers Windows 10 64-bit