Supports USB 1.1, 2.0 and 3.0 transfer standards. * Specification: Cable length: (50 inches), Outer Shell Material: (Flexible PU), Internal Leads: 24AWG, TipExchange Connector Design (Palm Palm Zire 21 Specific) * Flexible cable measures 50 inches in total length. Included connector tip, wiring and power configuration is unique to Palm Palm Zire 21 specifications. * Upgradeable TipExchange Technology protects your investment by providing a mechanism to upgrade the physical connector to adapt your cable to work with other devices in the future. (Additional connector tips sold separately). * Saves clutter, space and money by combining two critical tasks (e.g. power and data transfer) into a single convenient accessory.