If I remember correctly, Skywalker 1 was in a box, mine is blue, it has 3 ports: a coax to connect to lnb, a port for an electric cord for power, and a USB port to connect to computer
the Skywalker 2 looks like a PCIe card, it slides into a PCI slot (I think it will go into both a PCI or a PCIe), but only uses it as a holder. It has 2 connections on/from the card to the motherboard, one for power, the other to communicate, and a coax connector, which would be seen outside the computer case
Edit: so the
Skywalker 1 is an external card
Skywalker 2 is an internal card