Apple iMac 21.5”, late 2009. No hard drive. Last ran OS Sierra 10.12.6. 3.06 GHz Intel core Duo. 8 GB 1067 MHz DDR3 (2x4 GB). Nvidia GeForce 9400 256 MB. Internal CD SuperDrive. I have removed my hard drive. Mint condition and ran like a champ. Would no longer accept updates to the newer IOS.