Where can I find the relevant USB driver version? Nortek Support June 22, 2019 15:25 Updated Follow The latest serial to USB driver can be downloaded from the software page. Related articles My instrument is not communicating. What should I do next? What does Checksum error from your Nortek instrument mean? Integrators Guide – Signature Performance Model for Nortek Signature Series How can we get the Nortek standard control software to start-up automatically? Comments 0 comments Please sign in to leave a comment.