Buy a motherboard with an AGP slot.
The 8-bit slot had 62 pins. The 16-bit slot had an additional 36 pins.
Yes, AGP is completely backwards compatible.
An AGP video card.
An AGP slot is a post-PCI/pre-PCIx graphic card interface bus. It was a step up from the PCI video cards, but were phased out with the PCIx standard.
A 32-bit PCI slot has 62 pins. A 64-bit PCI slot has 94 pins.
32 Pins on a 4x connector.
No.. AGP is the Graphics Port and PCI Express is Multi-Purpose..
AGP
Yes.
I believe you can get PCI, PCI-X or AGP video capture cards. Each card would need the corresponding slot, such as an AGP card would require an AGP slot.
PCI express x16 is a faster slot