Designed exclusively for ultraslim hp elitebook notebook pcs the hp ultraslim docking station expands display network and device connectivity so you can be more productive throughout the daymdashall through a simple one click slide in side dock four usb 30 ports offer high speed connectivity to the usb devices you use most usb 30 reduces the time required for data transmission vs usb 20 is backward compatible with usb 20 and is bi directional get high speed con