Features: 1,for DC 5.5x2.1mm Female input,USB 2.0 Female output,for USB charging,2,for DC 5.5x2.1mm male output,USB 2.0 male input,for 5.5x2.1mm devices. Connectors 1 :DC 5.5x2.1mm Female jack.Connectors 2 : USB 2.0 A Female jack. Output: for DC 5.5x2.1mm Female jack or usb 2.0 A Female jack.USB to for DC Adapter plugs are very popular used in daily life, meet your indoor power needs for lots of small digital devices at home. Type A Male USB plug to 5.5mm(outer), 2.1mm (inner) male coaxial/barrel plug with positive center pin,inside+,ouside-. USB Male to 5.5x2.1mm Male + USB Female to 5.5x2.1mm Female Connector Convertor for DC or USB Electronics Charging,only for 5V charging. brand new and high quality. Specifications: Material: ABS Size:4.6cm Color:Black Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x USB Male to 5.5x2.1mm Male Convertor 1x USB Female to 5.5x2.1mm Female Convertor