I just tried to connect the tablet to a Mini Mac OSX.
It mounts.
I can see a USB device on my Mac but if I open it it says:
O items - 60.9 Mb available.
On the tablet I can't see anything accept when I connect the Mac the "memory Card (of the tablet) menu" in the filemanager goes grey.
When I disconnect the memory card is available.
So it knows there is another memory card but can't read it.
Don't have a pc here at the moment.

Update: I didn't notice the above comment. I moved a file from the tablet to the memory card of the tablet (it was empty untill now). Then the mac sees the file in the USB window!

Access to the device Mac-Tablet does not work either but I am looking for this soft to install to have access to bluetooth keyboard