3 key on the numeric keypad completely HS, in fact it is the cherry MX switch is dead, it is just enough to touch the spider to the side for the keyboard reacts as if the button was pressed 3 permanently, thus unusable keyboard, for the nine is a bit disappointing. Fortunately Amazon has a good shopping refund policy! Looking more closely, we see that the price of the keyboard is only in the switches and metal tile, the rest is frankly not seriously quality plastic keys and the hull, look better than the lettering Tte Meka but still not molded into the plastic ... I will keep my Chicony / Wyse membrane while waiting to find a model M.