What is the difference between LC and LC III PDS slots?
The LC PDS slot is shorter than the LC III PDS slot. The LC III PDS has a few extra pins in it which make the LC III PDS slot a 32-bit slot (whereas the LC PDS is a 16-bit slot). Most LC PDS cards will work just fine in an LC III PDS, but the few cards which do take advantage of the extra bus width of the LC III PDS slot will NOT work in an LC or LC II. Similarly, a very few cards developed for the LC PDS will not work in the LC III PDS slot.
