From what I've seen, its microHDMI output for video and just headphone out (3.5mm) for audio. other inputs include a full size USB 2.0 port on the top as well as microSD slot and sim card for wireless data. Thats for the tablet alone without the keyboard.
There apears to be a sim slot in the case, but it may not have anything installed hardwarewise to use it. There's nothing in device manager that would sugest there is, and it doesnt look like there are contacts on the slot, though a full teardown would be required to make sure. It does however have NFC, Wifi and BT4.0