... power supply,DC5V,power loss about 50mA485 port: PPI port power supply,DC24V,power loss about 15mV ... Master Network* Support long distance communication,RS485 port Max. distance: 2Km(9.6Kbps),1Km(187. ... 5Kbps)* Each PC just use one USB cable* Work temperature: -10~+70°CPC port cable length: 0 ... cable and PC normal communicate.POWER indicating lamp: PPI cable and PLC 485 port interface normally supplied ...