In reading about the new desktop G4's, I read Apple's warning about the need to do a firmware update on the Superdrives. I researched the Pioneer web site and saw the update notice for 103 and 104 drives. Just to be sure, I emailed Pioneer re the 105 and their customer support confirmed no update required. "Thank you for contacting Pioneer Electronics, Inc. Yes, the DVR-105 is up to date. It can be used with the high-speed media. " Those with the 103/104 should download and install the update. No charge. Gary