GOOQ Magnetic Cable Cord Mobile Power Charging Cable for Microsoft Surface PRO 3/Pro4 12 Inch Tablet (Pro 3/Pro4 charging cable) 100% new and high quality. (with retail package) This cable fit for your surface/Pro3/Pro4 tablet NOTE: ONLY for 12V 2.5A mobile power supply!!! No USB port! Tinned copper / Electromagnetic Immunity / high speed charge / short circuit protection / over-voltage protection Suitable for DC plug size: 5.5*2.1mm; Please use Formal mobile power bank to charge your tablet pc!!