Startech USB to 5.5mm power cable - Type M barrel - 3 ft (USB2TYPEM) Warranty Information Warranty Lifetime Hardware Cable Jacket Type PVC - Polyvinyl Chloride Connector(s) Connector A 1 - USB A (4 pin) Male Connector B 1 - Barrel Power Connector (Size M; OD:5.50, ID: 2.10) Male Power Center Tip Polarity Positive Physical Characteristics Cable Length 3 ft [0.9 m] Color Black Product Weight 1 oz [28 g] Packaging Information Shipping (Package) Weight 1.4 oz [40 g] What's in the Box Included in Package 1 - 3 ft USB to Type M Barrel 5V DC Power Cable Tired of having to carry around a separate wall adapter in order to power or charge your 5V devices, such as certain external hard drives, streaming media players, and Bluetooth® speakers? This USB power cable makes it easier to power 5V DC devices that have a Type M (OD: 5.5mm, ID:2.1mm) barrel power connector. You can power or charge the devices through an available USB port on your laptop or desktop computer. Expertly designed and constructed of high-quality materials, the StarTech. com USB2TYPEM power cable is backed by our lifetime warranty. The StarTech. com Advantage Guaranteed reliability