DSI presents mechanical switch keyboards featuring only the finest Alps Mechanical switches and Cherry Mechanical switches. A mechanical-switch keyboard uses individual key switches, located under each individual key cap. These switches are highly durable and individual switches/keys can be replaced. The actual switch allows you to fully feel when a key has been pressed; making you aware whether or not the key has been pressed and registered. Mechanically speaking, this type of keyboard allows the fastest typing, as the switches "pop" up quicker than any other type of key switch..