If you are running a 32-bit version of Windows, you might find it in:

That approach is unnecessary and dangerous. Instead, install or repair Apple Mobile Device Support via Apple’s official installer (iTunes, iCloud, or Boot Camp). The .inf file is only a small part of a complete driver package containing security catalogs and kernel-mode .sys files.

While usbaapl64.inf can be found on various DLL/file download websites, :

: An .inf file is just an instruction sheet. It requires accompanying .sys and .cat files to actually function. Downloading the .inf alone will not fix your driver issue.

(Look for Apple Mobile Device USB Device ) Portable Devices (Look for Apple iPhone or Apple iPad )