Das Keyboard is a series of computer keyboards sold by Metadot Corporation, a software company located in Austin, Texas. Some models feature blank keycaps, made with the purpose to help improve touch typing skills. The current iterations employ mechanical keyswitches manufactured by either Cherry or Greetech. It is worth to note that "the keyboard" in German is "die Tastatur", not "das Tastatur". Das Keyboard products There have been multiple generations of Das Keyboard: The first iteration, released in 2005, did not feature mechanical key switches, but in addition to the blank keycaps, it featured a Model-M-inspired design, and individually weighted keypresses, because some keys are pressed with less force than other keys. The second iteration in 2006 introduced mechanical key switches using Cherry MX Blue switches. The third iteration in 2008 was the first to be offered in both Ultimate (unlabeled) and Professional (labeled) versions. This USB-only keyboard also offered six-key rollover capability (the maximum for a conventional USB HID keyboard), an internal two-port USB hub and came with a glossy surface. Both 104-key (ANSI) and 105-key layouts (ISO) were offered. This version was not without its problems, however, as it became known that key transposition errors could occur at high typing speeds. In addition, interoperability issues related to the USB hub and lack of power were noticed with some systems. The "Das Keyboard Model S" was introduced in late 2009, and continues to be sold today. It contains revised electronics to address many common complaints along with supporting media keys and PS/2 operation. Again, it is shipped in both Ultimate (unlabeled) and Professional (labeled) versions, both 104- and 105-key, with the addition of a labeled Professional Silent model featuring non-clicky but tactile MX brown stem keyswitches. The latter is intended for applications demanding lower noise levels than obtained with the regular clicky MX blue stem switches while retaining a similar tactile characteristic. The "Das Keyboard 4" was introduced in 2014, featuring new aesthetics and improved construction. As with previous models, it was available in an Ultimate (unlabelled) configuration, as well as a more standard Professional version with key legends. In 2015, some versions of Das Keyboards began shipping with Cherry MX clone switches manufactured by Greetech. The "Das Keyboard 4" for Windows continues to be sold with Cherry MX switches, but the Mac version and the "Das Keyboard 4C" models all feature the clone switches instead. This move has