Dell Docking Station – USB 3.0 (D3100) | Dell Ireland
StarTech.com USB 3.0 to Gigabit Ethernet Adapter - 10/100/1000 NIC Network Adapter - USB 3.0 Laptop to RJ45 LAN (USB31000S): Amazon.co.uk: Computers & Accessories
How do I find out whether my system has USB 3.0 ports? - Ask Ubuntu