Features: brand new and high quality Universal Compatibility: USB Male to DC 4.0x1.7mm 5 Volt Barrel Jack Power Cord Adapter Converter Cable, Power your device through USB port, ideal for small electronic devices that use 4.0mm barrel jack as power cord, Works with 1000, 2000, 3000 and charges via any computer's USB port. Multiple features: the cable signal is stable and faster, and it is widely used. The resistance is smaller, the heat generation is low, the conductivity is fast and the transmission is strong, and the performance is more stable. Tight connection: resistant to plugging and unplugging. Male USB plug to 4.0mm (outer), 1.7mm (inner) male coaxial/barrel plug with center pin. Power the device from the USB port. Safe and reliable: The built-in upgraded intelligent IC circuit provides perfect overcurrent, overvoltage, overload or short circuit protection for your equipment, high temperature resistance of 80 degrees, safe and reliable. High quality: PVC environmental protection material, metal nickel-plated plug, anti-corrosion and no rust. The wire body is tougher and more wear-resistant, the reinforced joint is more tough, high-strength bending, more tensile force, and longer life without breaking. Specifications: Material: plastic Length: approx. 1m/39.37in, 2m/78.74in(optional) Package Includes: 1 x USB to DC Cable note: Only support 5V devices , don't support 12V . The internal interface is positive and external is negative. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!