I got this one http://uk.startech.com/Networking-IO/Adapter-Cards/USB-3-to-Gigabit-Ethernet-NIC-Network-Adapter~ST3300U3S It is more expensive, but if you limited in only having 2 USB 3 ports on your laptop or some people only have one then it is a god send. Although it is nearly half the price on Amazon http://www.amazon.co.uk/gp/product/B00BB7TU8Y/ref=oh_details_o04_s00_i00?ie=UTF8&psc=1 Even at the cheaper price on Amazon it is still twice as much as the AREA Constantine 2 and they both use the same ASIX Chip for the Gigabit Ethernet Adapter.