PLANET NVR-1620 - Manual (Page 24)

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Connector Description
VGA VGA output
Ethernet 10/100/1000Mbps network
USB Connect your USB flash disk for firmware upgrade and backup
E-SATA External E-SATA HDD
Audio Line in/Line out/Mic
I/O DI x 8 / DO x 4
2.3.6 NVR-3250 HDD Installation
1. Start by removing the front plate.
2. To remove the front plate, turn the tool-less screws on both sides counter-clock
wise to loose it from the unit. Please note the screws will still be attached to the
front plate even after the screws are completely loosened from the unit.