As mentioned previously this is my first experience with Macs and I landed a few of them in a recent bulk purchase. Anyways, I have a few of these systems and they have G3 card upgrades. I was told by a Mac vetran that the card in the brown slot in these is a G3 upgrade and the sticker ("Upgraded With a G3 Card") put on the back kind of goes along with this. However, there is no markings on the cards and some of the systems have different looking cards. How can I tell what the upgrade speed is? I've searched numerous websites that people have refered me to but that was no help. I plan on auctioning these systems off and like to be honest in the specs when I sell them. Thanks!