Funny you mention toggling numlock. Indeed in windows mode, the Takumi ALPSulator with every press seems to toggle numlock and push/release the number key (I'm using linux by the way). So I switched the device to mac mode, which behaves much better (no numlock stuff, unless I hit numlock myself). But either way, the number keys do not auto-repeat, even a long press will show a keypress event, immediately followed by a keyrelease event. The weirder thing is that some keys like the = (or enter) do autorepeat on this numpad. Oh well, I can live with it, I just won't be using this thumpad for mousekeys, since I can't hold down the key to move the pointer more than 1 pixel at a time :-)