Hi, I have a U9 with a2 lite remote which works great. I have bought a new android tv box to use in the bedroom and want to use an a2 lite remote as its fab. But before buying another I have tried my existing a2 lite mouse with dongle on new android box. Lots of functions work except for the power on/off. Is there any way to get this to power on/off to work or should I buy an alternative air mouse by a nother manufacturer?