New computer, trying to connect PRS-505 to digital editions

I have downloaded Digital Editions and my library to a new computer. However, now I can't connect my PRS-505 e-reader to add new e-books.

I have the e-reader connected to the computer.

The computer can read to device.

When I open editions it does not see the device.

I cant find a way to add the PRS-505 to digital editions.