Ledhill 3.5-mm TRRS Pro Stereo-Plus-Mic Audio / Swipe Card Reader Extension Cable ~ 4-ft / 1.2-m long (White - Male/Female Gold Plated). Works great for Apple iPhone/iPod/iPad, Android smartphones and tablets, compatible with Otterbox iPhone cases and any smartphone cases. Works great for Apple iPhone/iPod/iPad, Android smartphones and tablets, compatible with Otterbox iPhone cases and any smartphone cases. Molded gold-plated connectors with strain relief ensure a solid, high quality connection between the connected devices. Full functionality support for iPhone/iPod/iPad headphones remote control buttons for volume / play / pause / skip / next / previous control and etc.Steps for connecting Swipe Card Reader:1) Launch swipe card reader app on your smartphone, select the item to be charged.2) Insert Swipe Card Reader the male plug to the female cable connector.3) Insert male plug to smartphone 3.5-mm minijack.4) For PayPal Here swipe card reader, wait for "Detecting Device" and "Card Reader Connected" messages from the app to be shown. Other swipe card readers may show similar messages.5) Your Swipe Card Reader extended with Ledhill 3.5-mm TRRS Pro extension cable is ready to swipe.6) Done.