WN3000RP Range Extender, Is the ethernet input or output?

Im just looking at getting a WN3000RP Wireless range extender. I want to use it for when im at university, not to pick up and re-distribute a current wireless signal but to plug into my ethernet connection in my room so that i can have wireless internet. I noticed it has an ethernet connection but cant find anywhere if its an output to connect to a non wireless device or an input?! any help would be greatly appreciated! thanks!