System as a fresh install of OS X Yosemite, along with Microsoft Office 2016. System has been fully tested and verified as working. Includes computer tower and power cord only. 

August 7, 2006*January 8, 2008
2 (4 Cores)64-Bit
51905873
14054817
15095272
2 GHz Xeon x2

N/A2, 3, 3 (Quad) GHz*
LGA 771 SocketsIntegrated
1.33 GHz2 GHz (Built-in)
EFI32-Bit
N/A4 MB*
PC5300 DDR2 ECC667 MHz


16 GB32 GB*
ATI Radeon HD 2600 XT 

500GB
6X DL "SuperDrive"
NoneNone
5 (2.0)2 (400), 2 (800)
4 PCIe, AP/BL*4 3.5", 2 5.25"
Details:*The Mac Pro has four PCIe expansion slots (one double-wide 16-lane PCI Express slot is occupied by the NVIDIA GeForce 7300 GT in the default configuration, and three full-length PCI Express expansion slots are open). Apple also reports that the system has "configurable bandwidth that mechanically supports 16-lane cards [and supports] 300W combined max for all PCI Express slots."


TowerMac Pro
MA356LL/AMac Pro
A1186 (EMC 2113)MacPro1,1*
X 10.10.5