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 (21.5-inch, Mid 2011)
• [ Model Identifier: iMac12,1 ] [ Part Number: MC309xx/A, MC812xx/A ] [ Newest compatible operating system: macOS High Sierra ]