As reviewed in MacAddict, the Compact Mac Keyboard is a compact keyboard that features high quality Cherry Mechanical Switch technology good for 50 million+ cycles. The Compact Mac Keyboard comes with 2 USB plug-in connectors: a 1.1 USB connector and a 2.0 USB connector. The 1.1 USB connector (silver color) controls the actual typing interface while the 2.0 USB Pass Through connector (gold color) is additionally plugged-into the computer when an external device (such as a camera) is plugged into the keyboards side port. The cables can be plugged in simultaneously into the computers? USB ports.