I am trying to bring up the cn0338 board following the instructions in the wiki page. After plugging in 9V power supply and USB to the debug port, the lamp lighted up and I can see the MBED drive. Upon dropping the .bin file into MBED drive, the folder window would close by itself. Was this normal? I switched to the user USB and tried to make connection via PuTTY, but it was not successful. I am using a Windows 10 lattop. Your help will be greatly appreciated. Thanks!