Pro Series set up question

I just purchased a PR2100 setup to backup my photography. The instructions say to connect it to a router via the included ethernet cable. I have it setup in my garage lab/office, but my router is in the house. I currently use a wifi extender to access the internet from my desk. Do I need a router or just plug it into the extender? Thanks in advance.

You should be able to just connect it to your extender for your PR2100 to get an IP address from the router.

Thank you!