On 06-01-2007 22:30, JRHeald, jrheald at wans.net, wrote: I have a Power Mac G4 model no. M5183, serial no.XB12308DKL1, that I thought was a "D/A" model since it has a 733 MHz processor. When I search for model numbers in MacTracker, the model number says it's the AGP Graphics model (max processor speed of 500MHz) or a G3 Blue and White (max processor speed of 400MHz). The labeling on the back of the Mac appears to be original, so what exactly do I have? I'm confused and would appreciate some clarification. Thanks for the help. John John, Searching your Serial Number I found the following: Serial number: XB12308DKL1 Name: Power Macintosh G4 (Digital Audio) Model: M7681 PowerMac G4 733MHz Bus speed: 133MHz Factory: XB (ElkGrove/Sacramento, California) URL: Technical specifications by apple-history.com code_to_number: 08D - Model introduced: 2001 Production year: 2001 Production week: 23 (June) Production number: 285 (within this week) HTH, Jo Hissel -------------- next part -------------- An HTML attachment was scrubbed... URL: http://listserver.themacintoshguy.com/pipermail/g4/attachments/20070107/96c00bfc/attachment.html