Plug an Ethernet adapter into the USB port on your Surface. See Surface features for info on the location of the USB port on your Surface.
Step 2: Plug an Ethernet cable into the adapter.
Step 3: Plug the other end of the cable into your router or an Ethernet network port.
Step 4: Swipe in from the right edge of the screen, and then tap Settings.
(If you’re using a mouse, point to the lower-right corner of the screen, move the mouse pointer up, and then click Settings.)
Step 5: Tap or click the wired network icon Wired network icon.
Step 6: If prompted, type your username and password, and then tap or click Next.
If you don’t know this info, check with your network administrator.
Step 7: To see if you’re online, go to the Start screen and tap or click Internet Explorer.