this keyboard be the Das Model s Ultimate Silent , mean it have Cherry MX Brown switch and no lettering on the key -lrb- they be blank , force you to learn how to touch type -rrb- . the mechanical switch in this keyboard be great , they do not make the click noise at the actuation point -lrb- halfway down the key-press , when the switch be activate -rrb- , however they still have the same tactile bump as the non-silent version of the keyboard that use the MX Blue switch . the reset point of the MX brown be almost the same as the actuation point , so it be very easy to double tap the key as you can `` float '' at the halfway point and just slightly lift and depress the key repetitively . if you bottom out the key as you type -lrb- you press they all the way down so that the key hit the back-plate -rrb- , the keyboard will make some noise , however if you learn to touch type you will not bottom out the key , you will just press they halfway down until you feel the tactile bump let you know the key press have be read , and then lift you finger back up again , this allow you to type with much less effort and mess less noise . if you be gaming you will probably find yourself bottom out the key more frequently , so the noise level will be equivalent to those of a standard rubber dome keyboard -lrb- e.g. logitech g15 -rrb- . this keyboard come with a usb to ps2 adapter so that you can avoid the limitation of the usb interface , where you be limitt to 6-key rollover -lrb- meaning if you press more than 6 key at once whilst typing furiously or more commonly , gaming , it will only register the first 6 key depress . -rrb- if however , you be use the include ps2 adapter , it support full n-key rollover -lrb- nkro -rrb- . with nkro support , you can press all 104 key simultaneously and it will register all of they . this be very helpful once you start break 100 wpm or if you be a serious gamer play RTS or FPS game like Starcraft 2 where miss clicks\/types be very unforgiving . this keyboard be you standard mechanical keyboard with all of the expect feature -lrb- NKRO , good tactile feedback , standard layout , and gold connector -rrb- . it do not glow in the dark , it do not have a lcd screen , and it lack macro feature or media control , however it do what keyboard be design to do : allow you to input datum in a reliable and fast manner .