The STEVAL-PCC015V1 demonstration board serves as a bridge between a standard USB port and a classical serial COM port. It implements the standard CDC class of USB and emulates COM port functionality to a standard USB port. The board implements RS232 full hardware flow control using RTS and CTS. The communication task between USB and RS232 (UART) is performed by the STM32 medium density line device. A standard DB9 connector (female) is used for RS232, allowing direct connection to a PC. The unit is bus-powered and RoHS compliant.