Hi-Speed USB 3.0 Hub adapter provides 2 downstream USB ports for Plug-and-Play connectivity to your USB 1.1, 2.0, and 3.0 devices The USB hub can also act as a USB charger; gives you the ability to charge smart phone and other devices attached to it; Especially great for notebooks which come with only a few ports; this unit enables use of multiple USB devices at once, such as a printer, card reader, cell phone, iPod, thumb drive, mouse, keyboard, or an external hard drive Transfer high-resolution images and video recordings to your computer faster and more efficiently; Ideal for transferring high-resolution images and video recordings; Compatible with next-generation Ultra High Speed SDHC/SDXC and microSDHC/SDXC cards Compatibility: Supporting multiple card formats, including microSD/microSDHC/T-Flash, SD/SDHC, MMC, MMC Plus, RS-MMC, MMC Mobile, MicroSD, TransFlash, microSDHC A perfect lightweight travel tool, this compact hub fits easily into the pocket of your laptop bag. It offers an ideal way to connect on the road, and virtually anywhere you need fast, handy access to your USB devices