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Ali Arslan posted a topic in LK-seriesI have recently bought a used Casio LK-41 (Japanese Language). It has a Midi Usb port. I have been trying to connect it to my Dell N4050 laptop to use it as a midi controller device with Reaper, but it is not connecting properly. I have tried 4 different midi cables of various lengths, but no luck. I have tried to connect it to another laptop as well, but I get the same error. I have tried tons of different drivers; none of them work. In the device manager, it should show under Sound and Game Controllers, but it always appears as an Unknown Device under Universal Serial Bus Controllors. I used to have Windows 10 64-bit; I switched to Windows 7 32-bit, then to Windows 7 64-bit in a hope to resolve the issue, but all in vain. I have done a lot of research. But I haven't been able to find any solution. I would really appreciate if a professional would help me out please! P.S. I am considering the following solutions at the moment: 1. Switching to Windows XP 32-Bit. 2. Joining 2 Midi Cables in order to attach the Piano to two USB ports at once (In case, if it is an issue of the piano not getting enough voltage).