UM232H Development Modules FTDI UM232H USB-to-serial / FIFO Development Modules use the FT232H chip to handle USB signaling and protocols. The UM232H module is ideal for development purposes to quickly demonstrate the functionality of adding USB to a target design. The UM232H module is designed to plug into a standard 15mm wide 28-pin DIP socket. The USB connection to a host system is via a mini-B USB connector.