Grant: Make sure you format the card in the Book Port itself. It may take a little longer, since it is a larger card. Also, make sure you are using the latest firmware version of 2.3.0, because there were major problems with previous versions and 4 gig cards. If you are using the latest firmware and are still having problems, once you've formatted, then the problem may be on our end. Also check to be sure the card doesn't have any switches that need to be set, to place it in 4 gig mode. Pamela Rader, TECHNICAL SUPPORT American Printing House For The Blind 1839 Frankfort Ave. Louisville, KY 40206 PHONE: 1-800-223-1839, Ext. 307 >>> grant_hardy@xxxxxxxxx 12/08/06 10:49PM >>> Hi all, I recently purchased a Samsung 4 GB compact flash card. Although the card works beautifully when inserted into my computer, the Book Port doesn't recognize it at all. When I insert it into the Book Port I get silence. What's up with that? Grant