Matias Quiet Click switches are first mechanical keyswitches that are actually quiet. These switches are extremely tactile, as they have a metal click leaf in their design, and they were designed to be quieter than the quietest of Cherry MX switches. Boasting a 50 million click lifespan, if you're looking for a workplace friendly endgame switch type, this is the optimal choice. They let you build superior mechanical keyboards that are no louder than the generic keyboards that most computers come with.
Actuation Force: 60g | Key Travel: 2.2 (+/- 2) mm to actuation, 35 (+/- 5) g @ 3.5 mm

The detachable cable uses a standard mini-USB connector.

Arriving in the standard tiered profile, it's equipped with little more than the essential keys. There’s no required software to install after plugging in through the USB interface, and a six-port DIP switch allows users to adjust the FN key position.
Warning : The keyboard should be unplugged while changing the DIP switch settings.