3 ms·Actually it's the device that supports both PS/2 and USB mode. The host doesn't.by immibis 1y agoActually it's the device that supports both PS/2 and USB mode. The host doesn't.hxorr 1y agoThis is also my understanding toocyberax 1y agoSure. It is also a possibility, but a lot of PS/2 devices predate the USB.