BlackWidow Elite keyboard keys were typing and locking randomly, as well as volume wheel was playing with me while it was connected to USB hub. I had to disconnect Deathadder Elite and come back to old A4 Tech mouse. It works fine when connected to USB hub. I connected BlackWidow Elite in the only available laptop direct USB port. No issues so far. I am not going to buy Razer ever again. Also can't send the mouse and keyboard on the warranty as it is not broken. It is just badly designed software. I guess I need to wait couple months until I buy desktop PC, sigh... I wish I have read about Synapse and USB hub issues in any review!