Because it is an executable file downloaded from the internet, users should verify its integrity.

If you install the driver and it still doesn't work, check these three things:

or a temporary folder like:

: A system reboot is typically required for the hotkeys to become active.

C:\SWSetup\SP65563\

software, which acts as a bridge between the laptop's BIOS/firmware and the Windows operating system. Without this driver, the dedicated hardware keys (Fn + F1 through F12) often fail to trigger their intended on-screen actions. 2. Primary Functions Brightness Control: Enables the (or similar) keys to adjust the backlight level. On-Screen Display (OSD):