This Mac Pro has been used almost exclusively for audio recording/playback. It has been tested and re-installed with Mac OSX 10.11.6 El Capitan. Only one of the drive bays is occupied with a 1TB HDD. 



3.2GHz Quad Core Intel Xeon processor


ATI Radeon HD 5770 1024MB graphics card

4 internal 3.5" SATA bays

4 PCIe 2.0 slots

5 USB 2.0 ports

4 Firewire 800 ports

Dual Gigabit Ethernet

2 Mini DisplayPorts

1 Dual-link DVI port

AirPort Extreme (802.11 a/b/g/n)

Bluetooth 2.1+EDR

Apple Mac Pro Mid-2012 3.2GHz Quad Core Intel Xeon