Gomadic USB Charging Data Coiled Cable for the Garmin nuvi 2557 / 2577 / 2597 LMT Will charge and data sync with one unique TipExchange enabled cable Included TipExchange technology enables cable to be easily upgraded by simply switching the physical connector plug. Specific connection for the Garmin nuvi 2557 / 2577 / 2597 LMT is included, with additional connectors for thousands of other devices available separately. Specification: Cable length: (12 to 30 inches), Outer Shell Material: (Coiled PU), Internal Leads: 24AWG, TipExchange Connector Design (Garmin nuvi 2557 / 2577 / 2597 LMT Specific) No additional AC power required. Uses power from the USB port of the computer to charge the Garmin nuvi 2557 / 2577 / 2597 LMT Supports USB 1.1, 2.0 and 3.0 transfer standards Well-made, coiled construction custom built for dual sync and charge services of the Garmin nuvi 2557 / 2577 / 2597 LMT. Works from the standard USB data port of any PC.