If you abandon Windows, the K43S runs perfectly on Linux due to open-source drivers. The nouveau driver handles the GT 520M, and the iwlwifi module supports older Intel Wi-Fi cards. However, the Atheros AR9285 requires the ath9k driver.

ASUS only hosts drivers for on their official site.

If you encounter an issue not covered here, check hardware IDs (VEN_&DEV_) and search sites like DriverPack or TechPowerUp’s driver database. The K43S community remains active on Reddit’s r/Asus and the Win-Raid forums.