Techknight.. from what I recall they could only go up to a certain size depending on the model.. I think the limit was 9 on one of them.. the other 8MB.. I remember seeing this.. Perhaps this is why my PDS was missing the last chip so it only had 8MB total.. and that was a card from a 5120.. I wish i could remember.. but the max was 8MB on one and 9 on the other..