BTW my fridge and the small magnifier ring light both cause enough EMI on the power line here to cause a USB disconnect. Probably the source of much random noise. Half the time when the fridge turns on, cgminer re-inits the KLn device. They're on the same outlet circuit
- If such a permanent issue exists, why not to invest in a good power line surge protector?
My choice here always was the top device from the current
APC SurgeArrest product line and I honestly must said that I never was disappointed.
Modern
APC SurgeArrest PER5, for example, offers
15 - 55 dB EMI / RFI noise rejection in 100 kHz to 10MHz frequency range, amongst the other useful features:
http://www.apcmedia.com/salestools/ASTE-6Z7UZU/ASTE-6Z7UZU_R0_EN.pdf