Add 3 external usb 30 ports with uasp and a gigabit ethernet port to your ultrabook or laptop through a single usb 30 port the st3300gu3b portable usb 30 hub features an integrated gbe port enabling you to expand your laptop connectivity by adding three external usb 30 ports as well as a gigabit network port via a single usb 30 connection this hub is an ideal laptop accessory for your microsoft surface pro 4 surface pro 3 surface book dell xps 13 and many other devices the hub m