The Mac Pro models prior to the March 2009 Nehalem are not pre-wired in the optical bay for SATA. I prefer to magnetize my screwdrivers with a small but powerful neodymium magnet, to avoid screws falling into awkward places. Tools - the NewerTech 11-piece Portable Toolkit is an excellent choice for most Mac hardware installation. √ No more slow and noisy hard drives! Installation in older Mac Pros (2006 - 2008)