Apple Thunderbolt Display 27 inch (Model A1407), 2560 x 1440 IPS. Tested and working — the photos show this actual unit powered on and displaying. Built-in Thunderbolt + MagSafe cable; rear ports: 3x USB 2.0, FireWire 800, Gigabit Ethernet, Thunderbolt. Works with Macs that have a Thunderbolt 1/2 port (MacBook Pro/Air 2011-2015, Mac mini, iMac); newer USB-C Macs need Apple's Thunderbolt 3-to-2 adapter. Does not work with Mini DisplayPort-only computers or PCs. Full disclosure: the previous owner noted it had worked intermittently, possibly a cable issue — it powered on and displayed normally in my testing. Sold as-is, final sale.