Apple iMac 320GB SATA Hard Drive
With OS X 10.11.6 El Capitan
This Hard Disk Drive is pulled from a working Apple iMac (2009)
Mac OS X El Capitan is compatible with:
iMac Mid-2007 or newer
Mac Pro Early-2008 and newer
For sale is one Hard Drive only.
For more details look at the pictures.
iMac Screenshot picture is posted only to show that the Hard Drive and the OS are functional on the mentioned above type of computer.