27" iMac. The vision behind iMac has never wavered: Transform the desktop experience by fitting powerful, easy-to-use technology into an elegant, all-in-one design. The new iMac takes that idea to the next level — giving you even more amazing tools to do just about anything. iMac is packed with the latest processors, faster memory, and phenomenal graphics. All coming to life on the brightest, most vibrant Retina display ever on a Mac. It’s the total package — powered up. 4x USB 3.0 ports AND 2x Thunderbolt 3, connected via USB-C is the new all in one port which can do everything. Thunderbolt 3 supports blistering 40-Gbps speeds, but is also backwards compatible with Thunderbolt 2 (20Gbps) and Thunderbolt 1 (10GBps) and also works with USB 3.1 (10Gbps) and USB 3 (5Gbps), the ports also support HDMI, Ethernet, Displayport and more. Thunderbolt 3 is also your charging port meaning you can use any of the 4 ports to supply 100w of power to your laptop for charging, you can also charge devices and run bus powered peripherals from the ports. Thunderbolt 3 ports, faster DDR4 RAM, faster graphics and faster processors a fast update for the iMac!