Features: USB male to DC3.5x1.35mm power cable with switch, 3.5x1.35mm interfaces are internal positive pole and external negative pole. Sophisticated design, sensitive and durable with long service life. Oxygen-free copper wire cores, environmental protections PVC wire housing, good flexibility, strong and durable. It can only be charged, but cannot transmit data. Suitable for 5V LED lights, USB fan, speaker and other products. Specifications: Name: USB to DC-switch Cable Plug Specification: DC3.5x1.35 Core-specification: 28 wire 7/12 oxygen-free copper x2-core OD:3.0 Color: White Wire Housing: PVC Cable Length: 1m, 1.5m(optional) Length: 1m/3.28ft, 1.5m/4.92ft Package Includes: 1x USB to DC3.5x1.35mm Switch Cable note: Please allow 0-1cm error due to manual measurement. make sure you do not mind before you order. Please allow for slight color differences due to different monitor resolutions.