This USB Driver Pack Support the following Windows OS versions:
Windows XP / Windows Vista / Windows XP 64 bit / Windows Vista 64 bit / Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit.
Download Link: Direct Download Link for Samsung SCH-I959 Galaxy S IV USB Driver.
Installing The Samsung SCH-I959 Galaxy S IV USB Driver:
1- Download The Samsung USB Driver For Mobile Phones from the link above.
2- Double click on it to run it.
3- Now you have to follow the installation steps one by one, Like you do with any other Windows install program.
4- Wait until the installation process finishes.
5- Restart your Computer.
6- Now use your Samsung Mobile Phone USB cable to connect it to your Computer.
7- Wait until your Computer detects the new connected device.
8- Windows will install the right Driver for your Samsung Mobile Phone, So give it some time.
9- When the driver is installed, Windows will tell you that a new device is installed and ready to be used.