Use the Atheros/Qualcomm LAN Driver (Version V2.1.0.7) for stable wired connections.
Updating an older machine like the to Windows 10 64-bit can significantly extend its life, but finding the right drivers is often the biggest hurdle. Since Asus officially only supports this model up to Windows 7 or 8, you’ll need a "repack" strategy—a combination of legacy drivers, Windows Update, and compatible third-party versions to get everything working perfectly. Essential Driver Guide for Asus K53S on Windows 10 Asus K53s Drivers Windows 10 64-bit REPACK
Most K53S models use an Atheros AR9002WB-1NG or Intel 6250 card. Windows 10 typically handles these well, but you can find dedicated Windows 10 versions on DriverScape if you experience dropouts. Installation Tips for Best Stability Use the Atheros/Qualcomm LAN Driver (Version V2