Computer Interface, USB V1.12.0 Plug and Play Support Windows 98MEXP2000CE MAC & Linux Transmission rate Over 460 KBPS Signal Indication Sending data(red) and receiving data(green) LED Supply From the USB port, Bus protection 600W Working Environment 0C70C 10%95%RHFeaturesUSB Specification rev.1.120 compliant, Every time same COM number when use Support the RS232 serial interface, Over 460KBPS data transfer rate Support remote walk up and power management