PCI stands for Peripheral Component Interconnect... it is nothing but a slot available in the motherboard of your computer...
PCI Satellite Receiver Card (as it is properly called) is nothing but a card which fit into the PCI slot of your computer and used to receive satellite signals. You can directly connect the RG cable from the LNB to the PCI card and scan the satellite from your PC and watch the channels.
This is the cheapest PCI card that i counf find on Amazon: PCI Card
but that's a unknown brand which i never heard of and i dont recommend it if at all anyone wanna buy it... :no:no:no
This is certainly a good one: TBS PCI Card :k