Specification: Type: USB 2.0 A Male to DC 4.0x1.7mm DC Male Adapter Connectors 1 :DC 4.0x1.7mm Male jack. Connectors 2 : USB 2.0 A Male jack. Package includes: 5PCS x USB 2.0 A Male to DC 4.0x1.7mm DC Male Connector Adapter Contact part is made of copper material, good conductivity and durable, easy to use (Note: The output voltage is 5V ,Cannot use 12V voltage.) Compatible with most Bluetooth speakers, wireless charger pad, photo players, camera, GPS, android tablet, Bluetooth ear bud, external battery pack; Works with DC 5v electronics.The USB to DC Plug connectors is a perfect solution for mobile (Note: Please ensure the size of the DC adapter before purchase)

DC Adapter High quality :Nickel-plated connector is corrosion-resistant, oxidation-resistant, resist corrosion,long life and ensure minimal signal loss. Product features: monitoring power adapter, car navigation power adapter, laptop power conversion, charging and conversion connection for small household appliances, solar panel cable conversion and connection of different types of connectors, quick connection and disconnection(Note: Please ensure the size of the DC adapter before purchase). USB 2.0 A Male port can also charge DC devices,The DC 4.0x1.7mm port is widely used and is extremely convenient for a variety of devices such as DVD players, LCD monitors, Fan,electronic devices, tablet, IP Camera, Massagers, Desk Lamps, Bluetooth audio, Wireless Routers, and Speakers that output 5V power. Power or charge USB 2.0 A Male devices via standard DC 4.0 x 1.7 mmplug/adapter,Applicable to a variety of small electrical appliances, mobile phones, MP3, MP4, digital photo frames,U disk,ipaid, small USB lamps, USB charger. 5 PCS Interchangeable USB A Male to DC Plugs Connectors : 4.0 * 1.7mm.Easy to use,plug and play.The Connectors allows you to charge your device anytime, anywhere.Use a 5V power adapter with a barrel connector to power and charge USB devices.(Note: The output voltage is 5V ,Cannot use 12V voltage.).