The keyboard, on the whole, is of acceptable quality, but. The layout is not standard, and it is really challenging to become accustomed to it. It is quite difficult to type when blind. The benefits of it include: The pressing mechanism, the materials, the tactile sensations, and the construction quality. With its drawbacks, may these be the reasons that Logitech develops its own layout? After working on normal keyboards for twenty years, it is impossible to relearn new keyboard layouts. Blind typing does not work.