Description: High level of integration CJMCU-CP2102, built-in USB 2.0 full speed function,controller, USB transceiver,crystal oscillator, EEPROM and asynchronization serial data bus(UART). Support modulator-demodulator full function signal,not need any other external USB devices. CJMCU-CP2102's operating principle the same as USB-UART via circuit. PC USB port simulate COM port to expand by drive program. Realize the mutual transformation of USB port and RS232 port by CJMCU-CP2102 Specification: USB Port Type: Micro USB 2.0 Baud Rate: 300bps-1Mbps Output Voltage: 3.3V and 5V Communication Format: 5,6,7,8 data bits; 1,1.5,2 stop bit; checkout for odd,even,mark,space,none. Operating System: windows 8.1/7/vista/xp/98,Mac OS-X/OS-9,Linux Original CP2102 chip will appear COM port by installing drive Connect the standard Micro MINI-USB cable to PC's USB interface CP2102 chip with fuse can prevent short circuit and protect your device Onboard status indicator lamp will stay on after correct installation of drive and transceiver light will flicker in communication. A DTR trigger output can download directly program communication for arduino pro mini ATMEGA328P. Material: electric component Size：16x20mm/0.62x0.78inch Package Includes: 2 piece CP2102 Module with Serial Port