The iF Design award-winning USB-C Multi-Display Modular Dock 5 detachable magnetic kits along with the main body Each module can work separately as a stand-alone mini adapter or be magnetically attached to the main body for use together Dual or Triple Monitors: When the main body and USB-C to 4K HDMI, USB-C to 4K mini DisplayPort or HDMI to VGA are used at the same time, a MacBook Pro can be used with triple monitors Perfect compatibility for MacBook Pro / MacBook Air