Apple Inc. keeps on changing configuration of devices, it is extremely important to recognize exactly which Apple device you got in order to avoid any non-compatibility issues. Verify various identification properties of your Apple device.

• iMac (20-inch, Early 2009)
• [ Model Identifier: iMac9,1 ] [ Part Number: MB417xx/A, MC019xx/A ] [ Newest compatible operating system: OS X El Capitan ]