QNAP Security VioStor CMS (Version: 1.0.1) - Manual (Page 58)

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Tip: You can select to update the firmware of multiple NVR servers at the same time if they
are the same model.
3.8.5 TCP/IP Configuration
The CMS Server supports static IP assignment for all NVRs, and for each NVR, the number
of LAN ports can be different. Please note that DHCP is not supported.