Trial version: cache size is hardcoded to unlimited, which means the PTPdrive will use as much disk space as needed to temporarily store all the 30 pictures/movies allowed in the trial version
Memory:
about 10 MB of memory per mounted drive
Any CPU, as long as the Windows can start up an run
USB port to connect your digital camera to the computer
Digital camera operating in PTP mode. All digital cameras operating in PTP or PTP/MTP mode are supported, e.g. Nikon D90, Canon Rebel XSi, Logitech ClickSmart, ...
Note: The PTPdrive is not a replacement for the camera's factory (or Windows default) device driver. You must be able to connect your camera to the computer and have it visible in the Windows Explorer, before it can be mapped as a drive letter using the PTPdrive.