I didn't have any luck trying to transfer images that are on the internal HD of my ST16S controller to my iMac. I tried everything including using a USB cable from the controller to my iMac. I finally figured out how to do it wirelessly and it works really well. There is an file transfer app that is available on the Apple App Store. You can use the free version, but I bought the advanced version for $4.99 that allows full HD files to be imported to my iMac. You need the app on both your IOS device and OS including being logged into an internet connection. I hope this might help some other H Plus users to get their image and video files off their controllers and am sure PC users can do the same thing.