So I have an lk280 at my house that I use synthesia on a Samsung tablet with. It worked fine. I am overseas now and decided to get a lk280 to practice with here so bought another one and have my same tablet. For some reason I cannot connect the keyboard to the tablet here. Everything in the program Is the same, the only difference is a new keyboard and cords. I have the usb printer coming out the back of the keyboard to the usb, and then a female usb to a mini usb male for my tablet. It doesn't show anything connecting for some reason. I don't remember having to change any settings in the keyboard, and there is no disc or software that has tried uploading when plugging in. I can however use the sd card with midi songs I downloaded on. I'm restricted on tools here or I would multimeter the cord to make sure its good. Is there a chance that the usb port is not working? Everything else on the keyboard seems fine including the lighted keys.