If you are using device control (Host DLP), you can monitor / block file copying from a source to destination based on tagging rules but that would be very basic. Device control is mainly used to control plug and play devices (blocking them for example).
Hope that helps. Do wait for other members to answer.
Device control is meant for Removable storage and Plug and Play device control. You can specify to disable, monitor, make read only on these devices.
Full Host DLP will allow the additional functions of Network communication control, File system control, Email, etc with full content tracking.