SECURE WIRED CONNECTIVITY: Portable USB C to Gigabit Ethernet Adapter allows you to connect to GbE Network from USB-C/Thunderbolt 3 Laptop incl. MacBook/MacBook Pro, Surface/Surface Book, & Chromebook EXTRA USB 3.0/3.1 PORT: USB-C to Ethernet and USB Adapter adds a RJ45 Ethernet Port for wired LAN access and an additional open USB Type-A Port for connecting another peripheral device USB-C or TB3 1x RJ45 1 x USB Type A Device Port 1 Gbps Data Speed