I am using Silicon Labs CP2102 USB to UART Bridge on UDOO x86 (UDOO running 64-bit Windows10 Enterprise LTSB). In Device Manager, under Ports I can see 'Silicon Labs CP210x USB to UART Bridge (Com3)'. I have application that communicates to this USB device and works fine when I have USB cable plugged to 1 of 2 (either one) USB connectors placed on Frontal side of the board. And the same application can not connect to USB port when USB cable is plugged to connector placed on the opposite side of the board beside power connector. From Device Manager I still can see 'Silicon Labs CP210x USB to UART Bridge (Com3)'. Do you have any idea what is wrong?