Why can't I drag and drop files onto my external sd card on the lg v20?

I have just purchased an LG V20. the device is visible on my pc (w8.1) but I cannot drop audio files directly to my sd card or to the phone it's internal memory. I suspect that this functionality was deliberately removed to compel users to use their lg bridge software.

from Android Forums at AndroidCentral.com - Ask a Question http://ift.tt/2gNspdm
via IFTTT