Here are Samsung's latest USB drivers: December 2014!
Don't forget to hit the Thanks button
SAMSUNG USB Drivers for Mobile Phones (x86 & x64) v126.96.36.199
Drivers are for Galaxy S, SII, SIII , SIV and ALL other SAMSUNG Android Phones
1.uninstall previous drivers (control panel)
3.install new drivers
5.plug in your device and have fun!
SAMSUNG Android ADB Interface Driver v2.9.510.0