How to link iMac (Retina 4K, 21.5 inch, late 2015) as a display for Macbook Air (13 inch, early 2015)
Looking to link up a MacBook Air (13-inch, early 2015 model) to an iMac (Retina 4K, 21.5 inch, late 2015 model) as a display. Please can anyone let me know the exact cables I need? Not a tech person so would appreciate it in very simple terms / link to where I can buy! Thankyou