The sandberg usb hub is the ideal way to increase the connectivity of your laptop or desktop pc the three standard usb ports on the hub allow any usb 20 device to be connected to the computer but there is also an additional micro usb port which can be used with a smartphone features 3x usb 20 ports 1x micro usb port technical specification interface standard usb 20 usb 30 20 and usb 11 compliant supports up to high speed 480 mbits usb connectors 3