I'm using Zoom floppy plugged into the interface port on my 1541 II , the C64 is plugged into the Drive's serial port.
This works fine, and the Zoom floppy works well tranfering files from my PC - BUT only if I unplug the C64 from the 1541 whilst I am doing this, otherwise zoom floppy does not work & the LED will not light.
I don't know why this occurs, but when I used my old XM1541 cable I got round it but using an old Parallel port switch box to disconnect the C64 from the drive whilst I was doing file transfers from the PC.
Is there any way round this ? I'm scared of damaging the sockets/cables unplugging all the time !