Features: Connector 1: DC 5.5x2.1mm female jack. Connector 2: USB 2.0 A male jack. Output: DC 5.5x2.1mm female jack or usb 2.0 A male jack. SinLoon USB to DC adapter plugs are very popular in daily life, meeting the indoor power requirements of many small digital devices in your home (note: please ensure the size of the DC adapter before purchasing) Power or charge USB 2.0 A male devices through a standard DC 5.5 x 2.1mm plug/adapter, suitable for various small appliances, mobile phones, MP3, MP4, digital photo frames, U disks, ipay, USB small lights, USB chargers The USB 2.0 A male port can also charge DC devices. The DC 5.5x2.1mm interface is widely used and is very convenient for various devices, such as DVD players, LCD monitors, fans, electronic devices, tablet computers, network cameras, massagers, Desk lamp, audio, wireless router and speaker with 5V power output. The high quality of the DC adapter: the nickel-plated connector is corrosion-resistant, oxidation-resistant, corrosion-resistant, and has a long life span to ensure minimum signal loss. 1PC interchangeable USB A male to DC plug connector 5.5 x 2.1 mm. Easy to use, plug and play. The connector allows you to charge your device , anywhere. Use a 5V power adapter with a barrel connector to power and charge the USB device. (Note: The output voltage is 5V, and 12V voltage cannot be used. Package Includes: 1PcxPower Adapter Specifications: Material:Plastic Color :Black Size1: Approx.17.7x35.7x12mm/0.70x1.41x0.47inch Size2: Approx.12.5mm/0.49inch Size3: Approx.8mm/0.31inch note: 1.Please allow 1-2mm 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.