Install iOS device drivers on Windows without installing iTunes
I found this tip from DiskAid website:

You need to manually install the required driver, the "Apple Mobile Device Support" or AMDS.


Download the iTunes installation package from the official Apple Website.
You need a program that can open a CAB file and extract contents from it. 7-zip or WinRar can do it.
Inspect the content of the iTunes installer iTunes64Setup.exe (that you downloaded in step 1) with 7-zip (right click, 7-zip, Open archive). 7-zip will show the files inside that installer file.
Extract AppleApplicationSupport.msi and AppleMobileDeviceSupport64.msi from the installer file to harddisk.
Run AppleApplicationSupport.msi and then AppleMobileDeviceSupport64.msi.


After AppleMobileDeviceSupport64 is installed, windows should be able to detect the iDevice.