Hi, I've also got the problem that the keyboard just randomly stops working after 5-10 minutes. I don't have any USB3.0 Ports but why should it be an power problem if it just randomly occurs after 5-10 mins (does the keyboard suddenly need more power ?). I've also upgraded the firmware to the latest but it's still not working properly. Please tell me how I can fix this or what information I could to further debug the problem.