The Spares page helps you identify and manage available slots for each asset you have created. Spares include I/O cards, I/O channels, tags, and displays. Spares are displayed in DOC4000 after the initial import based on open slots. Prior to installing a new device, you need to create a project and reserve a spare. If you install a new device, you should run a full import to show the filled spare. DOC4000 detects the new device after the next successful import.