The LogicKeyboard ASTRA Backlit Shortcut Keyboard comes with color-coded, labeled keys that allow you to quickly execute shortcut commands for the ASTRA software program without remembering which key strokes are required. This keyboard is equipped with scissor-type switches for quiet typing and compatible with Mac systems by offering special OS-related keys, such as the command and option keys. It connects to a computer via two USB cables: one for the keyboard's input commands, and the other to support the built-in two-port USB hub. This two-cable design allows it to be suitable for KVM extenders. In addition, the keyboard is outfitted with dimmable backlighting with five levels of brightness, so you can clearly view the keys in dimly-lit to darkened environments.