Features: Bluetooth, Wi-Fi and four USB 2.0 ports. iMac: Get a refurbished 2011 iMac 21.5" Core i5. Operating System: Find more information on the operating system and latest version available on your product with our refurbished tech guide page. Options: Choose to get an iMac with 4GB RAM and 500 HDD, 8GB RAM and 500 HDD or 16GB RAM and 1TB HDD. Colour: In a sleek silver. Processor: With a processor speed of 2.5 GHz. Apple 21.5 Core I3 iMac Computer | 8GB | Living Social