I put a good little while to make up my mind but this one is really great because you can put 4 computers on the same screen, a mouse and a keyboard (you can tell me it's the principle) but I can tell you that it works great because in a jiffy you spend a PC to another by combination of keys on the keyboard (2X "switchingOff scroll" + "1" or "2" or "3" or "4" from the keypad digital) or by repeatedly pressing the button and not a crash with my keyboard + wireless mouse (Labtec Wireless Desktop); all keys "multimedia" work. I recommend it. Now I breathe on my desk because I won énomément up. Finally short, it's great !!! and in addition you have 2 cables provided so that you ask for? The only downside in my box, a 2 cables do not work; but OK !!! they will say that I have not had any luck. That's why I put 4 stars instead of 5.