Add four external usb 30 ports to your notebook or ultrabook with a slim portable hubr r connect up to four usb 30201x devices simultaneously at their maximum speedsr compact design with a built in cable for ease of use and portabilityr r the st4300minu3b portable 4 port superspeed mini usb 30 hub black lets you expand your usb connectivity by turning a single usb 30 port into four external usb 30 ports the integrated cable design makes this mini usb hub the perfect accessory for y