Connect external USB device with USB Female Jack First‎,‎ Secondly plug the 30 Pin interface with the TAB 10.1 or 8.9‎.‎ If reverse procedure is done‎,‎ then the OTG Cable might not be detected by the device‎.‎ USB Internet dongles will work only if your TAB supports them‎,‎ this cable is just a medium to convert the TAB‎'‎s connection to USB‎.‎ So if a particular USB device doesn‎'‎t work then first check its compatibility with Android OS‎.‎ Please note that this is not made by Samsung‎.‎ Compatible with Samsung Galaxy Tab 10.1 and 8.9 inch models‎.‎