The icusb232d 1 port usb to serial adapter lets you add an rs232 db9 serial port to your laptop or desktop computer through usb so you can connect to monitor and control a serial device for easy connections the adapter features a female usb type b port so you can choose the length of usb cable needed to reach your serial device 6ft 18m usb a b cable included the usb to rs232 adapter is a convenient and cost saving solution for providing legacy serial connectivity to devices such as po