Apple 27" iMac with Retina 5K Display (FK472LL/A) - (Certified Refurbished)

Each of the two ultrafast, ultraflexible Thunderbolt 2 ports significantly expand the capabilities of iMac. For example, you can connect high-performance peripherals and move data up to 40 times faster than with USB 2, and up to 25 times faster than with FireWire 800. You also have more than enough bandwidth - up to 20 Gbps - to daisy-chain multiple high-speed devices and still maintain maximum throughput.

iCloud. Everything you love on your iMac. On all your devices.
iCloud stores your content and lets you access your music, photos, calendars, contacts, and more from whatever device you're using. And with iCloud Drive, you can safely store all your presentations, spreadsheets, PDFs, images, and any other kind of document in iCloud - and access them from your iPhone, iPad, iPod touch, Mac, or PC.3
Mac OS X Includes Photos, iMovie, GarageBand, Pages, Numbers, Keynote, Safari, Mail, Messages, FaceTime, Calendar, Notes, App Store, iTunes, iBooks, Maps, Contacts, Reminders

Fusion Drive. High capacity. In a flash.
Fusion Drive is a breakthrough concept that combines the high storage capacity of a traditional hard drive with the high performance of flash storage. With Fusion Drive in your iMac with Retina 5K display, disk-intensive tasks - from booting up to launching apps to importing high-definition photos and video - are faster and more efficient. That's because frequently used items are kept at the ready on speedy flash storage, while infrequently accessed items go to the hard drive. The file transfers take place in the background, so you won't even notice.