PantheonES: "On the topic of keys and control, you can push down up to 20 of them simultaneously. This feature is coined “key rollover” and is advantageous for gaming, where it’s common for many keys to be pressed at once. Most USB keyboards only have 6-key rollover, or “6KRO”. It’s a common misconception that 6KRO is a limitation of the USB bus, which is inaccurate. Corsair Vengeance keyboards utilise the full USB specification report length, which most don’t, that allows up to 20 keys to be pressed simultaneously without problem."