Difference between PCI and PCI2.2

[DESTRO]

I just bought a wireless adapter for my PC and I went to check on the order and I noticed that it's a PCI2.2 instead of PCI. I didn't really double check because I applied filters to my search and just took for granted that it would be PCI. Will I be able to use this card in my PCI slot? What is the difference?
http://www.newegg.com/Product/Product.asp?Item=N82E16833129237

 

[Addis]

I believe PCI 2.2 is the protocol for the PCI bus, and so it should work in your motherboard.

 

[DESTRO]

Ok, thanks.

 

[Big B]

There's PCI 2.1, 2.2, and 2.3, which are different revisions of the PCI bus, a 32-bit, 33MHz bus.