Someone gave me a swimming, underwater Finis Neptune MP3 player but the problem is the charging cable was not included. Since this is a waterproof MP3 player the cable is proprietary and it is impossible to find a cable (from the company or otherwise) without buying a second unit on eBay with the cable.\n\nMy 1st question: Is there a way to cut apart an old USB cable and make my own charger\/transfer cable? \nMy 2nd question: There are four contacts on the bottom of the MP3 player. How do I map each one to know what is positive, negative, ground and data transfer? \n(Photo of MP3 Player pins attached)\n\nThanks!