This is a Mac Pro I had as a secondary machine. It has some scratches and shows signs of use, but it's still a high-spec machine that's fully functional. Includes the main unit and power cable. Processors: 2 x 2.4 GHz 6-Core Intel Xeon Memory: 32GB 1333 MHz DDR3 Graphics: ATI Radeon HD 5770 1024 MB It has four hard drives: SSD 500GB (for OS X 10.13.6 system) SSD 500GB (for OS X 10.11.6 system) HDD 1TB (for data) HDD 320GB (for data) It has two operating systems installed: OS X 10.13.6 High Sierra (clean install) OS X 10.11.6 El Capitan (clean install) OS X 10.13.6 is set to boot by default. To use OS X 10.11.6, press the power button and immediately hold down the Option key to bring up the startup disk selection screen.