Support Windows, Linux, MAC OS. Support Android and Raspberry Pi. USB bus power supply without external power; 5V and 3.3V output; max current 500mA; short circuit protection.     Support I2C Host/Master mode and Slave mode. 2 channels Hard(standard) mode up to 1.2M. 8 channels GPIO mode up to 400K.     Support PMBus and SMBus and provide the API library. There is much kinds of free PC software compatible with the LabviEW interface to deal with different requirement. Support USB-SDI12, USB-EasyScale, USB-UART and counter, PWM output, ADC sampling, GPIO control and other functions.     Multiple USB-I2C adapter can work in one PC at the same time (up to 100). It can output the RS485 signal (DE) and realize USB-RS485 by a TTL-RS485 module. The firmware can free update or change (such as SPI) by Own Bootloader program.     Provide secondary development API and API detailed document and all kinds of languages platform application examples (Labview,C ,VC,Qt,Python,Labwindows/CVI,C++ Builder,VB,VB.NET,Delphi,CodeBlocks,GCC,Eclipse,Android Studio etc.).          USB 2.0;bus-powered.     2 channels Hard(standard) mode up to 1.2M.     8 channels GPIO mode up to 400K.     8 channels ADC (12bit) analog voltage signals (0~3.3V) measurements; max sampling rate 1MHz.     16 channels GPIO outgoing control high or low level and all pin compatible with TTL level.     4 channels Pulse counter input.     2 channels UART can output RS485 signal (DE); max baud rate up to 2.25Mbps.     8 channels PWM signal output; duty ratio (0%~100%); frequency range: 1Hz to 20MHz.     16 channels EasyScale bus signal output and bus timing can be adjusted.     2 channels SDI12 bus output (need external transceiver).     Safe voltage: 0~5V     Temperature range: -40℃~85℃     Size:103 x 53 x 28mm     Material: plastic     colour: White          Package Contents:     1 x USB To I2C/IICAdapter Converter          Only the above package content, other products are not included.     Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.