Like all other mobile manufacturers, Sony has its own proprietor tool for transferring files or data to and from your device and is named Sony PC Companion. Sony PC companion is mandatory for all new Xperia devices and without it you can’t transfer any photos or music. When you install PC companion on your Xperia device it will automatically install the required USB drivers. Once USB drivers are installed, you can use it for transferring data or for installing stock firmwares on your device.
Here are the system requirements for Sony PC Companion
So, if you are interested and want to install the latest Sony PC companion on your PC Windows or MAC then you can install it by following the link below.