(12-Jun-2018, 09:35 PM)agent_kith Wrote: How many USB ports does it have? Check the USB connector (look inside at the pins).. Looks like there's something wrong with the USB signalling, either the cable is not working well, or the connector(s) tracks are dirty/burnt out.
Look inside the USB port of your SOTM and check if any of the tracks are 'burnt' off (current too high?), or if there is some sort of 'gunk' in there (dog hair?)...

Dog hair was a good guess in my house but I tried 3 different SOtM cards and 2 different USB cables. These SOtM cards require external clocks but I tried 2 different clocks. I also tried many different ways of powering the clocks and cards.