The keys of the UltraBoard 955 Numeric have a scissor mechanism. With this kind of mechanism, a more comfortable way of typing is guaranteed. The scissor mechanism ensures a silent typing feel and is therefore not perceived as disturbing by colleagues. This kind of keys are not only quieter, but they also require less force to press. The user still recognises the pressure point of the keys while typing, and at the same time does not have to apply too much key pressure force to press down the keys. A scissor mechanism combines just the right strength of actuation, optimal typing speed, and no physical strain for the user.