Operating system: Mac OS Cataline operating system (released in 2019). iMac: Get a refurbished 2012/2013 27" Core i5 iMac with 8GB RAM! Storage options: Choose 256GB SSD or 1TB HDD. Processor: 22-nm "Broadwell" 3.2 GHz Intel "Core i5" processor (4570). Connectivity: Four USB 3.0 ports, dual Thunderbolt ports, Gigabit Ethernet, 802.11ac Wi-Fi (802.11a/b/g/n compatible), and Bluetooth 4.0. Display: With a 27" 2560x1440 LED-backlit 16:9 widescreen IPS display. Features: Plus a FaceTime HD webcam and stereo speakers. | Apple 2012/2013 27" Core i5 iMac - 8GB | Wowcher