Finally, there exists an amazing mechanical keyswitch keyboard without the noise normally associated with mechanical keyboards. The Quiet Pro Keyboard uses Matias' Quiet-Click mechanical keyswitches, which were over 2 years in the making. They deliver a feel that is unmatched for comfort, without sacrificing the tactile feedback you need to type really fast. Also includes 3 port USB 2.0 hub, Mac option symbols printed on keys, special anti-ghosting circuitry so that the keyboard keeps up with the fastest Mac typists, laser etched keys so the characters don't wear off, and traditional sculpted keycaps for comfort and speed. This listing is for version 5, which is new in 2017. Version 5 features improvements in the switch tooling to increase reliability, and small adjustments in layout and electronics to reflect the current Apple OS.