The icusbandr232 micro usb to serial adapter cable for androidtrade converts the micro usb port on your android mobile device into an rs232 db9 connection letting you control a serial device from the convenience of your smartphone or tablet plus you can keep your android mobile device charged even when using the adapter to control or configure a serial device the adapter cable features an integrated usb power cable that connects to a computer usb port usb wall charger or portable usb batt