Nvr52-16P-I/Nvr52-16P-I/L/Nvr52-8P-I/Nvr52-8P-I/L/Nvr42-8P-I/Nvr42-16P-I Series; Nvr4216-I Series; Nvr608-4Ks2/Nvr608H-Xi/Nvr608Rh-Xi Series - Dahua DHI-NVR5432-EI User Manual

3.5.12 NVR52-16P-I/NVR52-16P-I/L/NVR52-8P-I/NVR52-8P-
I/L/NVR42-8P-I/NVR42-16P-I Series

3.5.13 NVR4216-I Series

3.5.14 NVR608-4KS2/NVR608H-XI/NVR608RH-XI Series

The following figure is for reference only and might differ from the actual product.
Figure 3-58 Typical connection
Figure 3-59 Typical connection
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User's Manual