The 2011 21.5 inch IMac with 4GB of RAM is a reliable and functional all-in-one computer from Apple. Despite having a broken glass at the front, it still works perfectly for office and casual computing tasks. With a 500GB HDD, this IMac is ideal for storing important files and documents. It comes with macOS El Capitan operating system and USB 2.0 connectivity for easy data transfer. This unit from 2011 is a great value for those looking for a reliable and affordable computing solution.