PRO SERIES DVR User's Guide
Appendix A
PRO SERIES SOFTWARE PROBE FUNCTION
In order to use "Backup to NAS", "NTP", and "Multi-Playback" functions of your DVR, you must
purchase and install one KEYPROBE from your vendor this is optional.
Connect the optional KEYPROBE with the print port. (The printer port remains operational and
can be connected to a printer)
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