Think Secret has posted a picture of the AirPort card-from the
confidential Apple service manual.
AASP's and those with a GSX/Service Source can get this manual only.
It's not a part that users are allowed to replace-only the below from
http://www.apple.com/support/manuals :
Mac Pro PCI Express/Graphics Card DIY Replacement Instructions 08/07/2006 5 882KB
Mac Pro Optical Drive DIY Replacement Instructions 08/07/2006 7 618KB
Mac Pro Access Panel DIY Replacement Instructions 08/07/2006 3 312KB
Mac Pro Battery DIY Replacement Instructions (Do it yourself manual) 08/07/2006 5 1.1MB
Mac Pro Radeon X1900 XT and Quadro FX4500 DIY Replacement Instructions (Manual) 08/07/2006 5 1.1MB
Mac Pro Hard Drive DIY Replacement Instructions 08/07/2006 5 701KB
Mac Pro Hard Drive Carrier DIY Replacement Instructions 08/07/2006 5 699KB
Mac Pro Memory (FB-DIMM) DIY Replacement Instructions 08/07/2006 7 1.2MB
Mac Pro Memory Riser Card DIY Replacement Instructions 08/07/2006 5 1,008KB
Mac Pro Optical Drive Carrier DIY Replacement Instructions 08/07/2006 7 619KB
Is the power cord stiill a F-Type connector?