I'm liking these little things but I keep getting problems with it. I start it up and it runs fine for a few minutes at almost 70k, then after a mere five to ten minutes I get this:
DM0: Comms error
Failed to open dualminer pn //./com158
DM0: comms error
DM 0 failure, disabling!
Thread 0 being disabled
I isolated one out of my five dualminers that was real troublemaker

. It was capable of messing all other (different) usb miners at the same PC under WIN showing usb and comm errors

. Now, it is on his island (directly connected to the USB port of one server PC mining ok by himself

) and the rest of dualminers are happy mining at 875 frequency together with Gridseeds

...