Lansweeper 5.3 only scans a limited number of devices in relation to Windows computers: keyboards, mice, printers... Scanners specifically aren't scanned in relation to Windows computers. Lansweeper 6.0, currently in beta, scans all USB connected devices though. If you haven't already, I would recommend contacting support@lansweeper.com to be added to our list of beta testers. Include "beta" in the title of your message.