Cable Matters Ultra Mini 4 Port USB Hub (USB 3.0 Hub/USB 3 Hub) 1 OUNCE LIGHTWEIGHT USB HUB - Ultra-Mini USB hub weighs only 1 ounce and immediately expands a single USB port from your laptop, notebook, tablet, or docking station into a SuperSpeed USB 3.0 hub that supports 4 USB peripherals COMPACT DESIGN FOR TRAVEL- Octagonal 2" x 2" design provides roomy access to all four ports simultaneously; An integrated 5 inch flexible cable tail that tucks back into the portable USB hub for carrying in your laptop bag pocket PC & MAC & LINUX COMPANIONS - Universal USB hub with bus-powered design requires no bulky power adapter and provides over-current protection to safeguard your valuable devices SuperSpeed USB 3.0 - Enjoy up to a 5 Gbps data transfer rate that is 10x faster than USB 2.0; Migrate files fast from a USB 3.0 flash drive or external hard disk drive while maintaining backwards compatibility with USB 2.0/1.x ENGINEERED TO LAST - Save wear and tear on the USB port of your tablet from constant unplugging and re-plugging of USB devices; Molded strain-relief connectors provide long life with frequent use Hub is not a stand-alone charger. It does not charge a smartphone. Supports only one external bus-powered hard disk drive connection Data transfer rate is limited by the USB rating of the computer Gold-plated connector with strain relief Rubberized TPE cable jacket LED status indicator Four USB 3.0 ports