The type of compact flash card is called Socket, and the one at Office Max is a great deal, though Socket is the only ethernet card that has been tested and approved by Pulsedata, and should be the only card used. And if you do buy the card, the brailleNote will say: "Card not recognised." This is because Keysoft is programmed, or at least I think, just for that porticular card, Socket LPE (low power ethernet)
HTH Cody
