As if the rise of the mechanical keyboard were not, by itself, already an obsession among the geek set, along came the option of affixing o-rings of various to the switches to quiet their sound and modify their feel. I just put a set of blue 40 A-R o-rings on my ikbc Poker II and it’s worth the time and effort of pulling off the keycaps. The keyboard is considerably less noisy (but not silent), and the feeling of depressing the key is modified some.