The StarPort USB Series adds a USB connector to the StarPort cradle that allows you to charge tablets, smartphones and other devices. Designed for use on a 12V supply and rated 2.1 Amps, the StarPort USB from Railblaza is suitable for charging and not for data transfer. It is also perfect when combined with Mobi Holder or Screen Gabba. The StarPort USB Series is water resistant, however mounting in less exposed areas is recommended.