I loved Skyrim...so much that I stopped playing in on a console and switched to PC so i could mod the heck out of it (man that was fun). I also fell in love with using a wired USB Xbox controller from microsoft. I recently submitted a question to the ESO team asking if it is or will be compatible and here is what they said...
"Hey Mark,
My name is XXXXX and thank you for contacting us here at The Elder Scrolls Online support team.
I understand that you are wondering about controller usage for the PC version of Elder Scrolls Online? I myself get back ache from leaning over keyboards so I get why you'd want to use controllers. Unfortunately, the PC/Mac control scheme is optimized for keyboard and mouse. Any of a number of commercially available emulators will allow you to use a controller, however ESO does not officially support controllers for PC and Mac. The PlayStation 4 and Xbox One versions of The Elder Scrolls Online will use their systems' respective controllers.
I hope that helps clear things up for you If you have any questions or comments, please contact us and we'll be happy to help.
Thank you for your continued interest and support!"
So just in case anybody is wondering the same thing...I've see some threads and all have "speculated" that you would be able to use one, but it appears the answer is and will be NO.
HOWEVER...If you google this topic, there is an app for the pc that seems to work specifically for this game/controller configuration, i even think there is a ESO thread with a link to the website.