ITEM NAME:PL2303HX USB to TTL RS232 COM UART Module Serial Cable Adapter for Arduino Oh Package Inclusion: 1 x USB to RS232/TTL PL2303HX Cable Adapter Module.USB TO RS232 TTL PL2303HX Auto Converter Module Adapter 5V Output, provides the best and convenient way to connect your RS232 TTL devices or DEMO BRD. To your computer, via the usb port. 1 x USB to RS232/TTL PL2303HX Cable Adapter Module.