... TO RS485 converter Industry-specific, antistatic, anti-jamming, 600 W lightning protection . USB TO three wire RS485 converterIndustry-specific, antistatic, anti ... +(A) 3----------GND Characteristics:1), power supply: there is no external power supply, power supply by USB ports.2), system ... with USB2.0 standard, USB1.1 compatible;6), Support remote awaken and power management;7), Support plug and play ...