1.RS 232 to USB adapter, 2.USB connector, 3.serial adapter, 4.Rohs, usb adapter Product Features USB Rev.1.1 compliant Support ... device provides a simple and easy way to connecta serial device to a USB port on a computer. With the ... change feature that enable USB interface to be transparent to serial port peripherals with minimum modifications. RS 232 to USB adapter, serial adapter, USB connector