Thanks to the QNAP QNA-UC5G1T USB 3.0 to 5 GbE adapter, laptops without an Ethernet port can connect to wired networks at speeds of up to 5 Gbps via USB 3.0. However, this piece of hardware can also be used to add extra Ethernet ports to NAS devices. The QNA-UC5G1T should hit the US market by mid-June.
https://www.notebookcheck.net/QNAP-reveals-the-QNA-UC5G1T-USB-3-0-to-5-GbE-adapter-for-NAS-and-computers.421266.0.html