NVR4POE / NVR8POE / NVR16POE Series NVR User Manual101.1 Front PanelNVR4POE / NVR8POE / NVR16POE SeriesTable 1. 1 Description of Control Panel ButtonsNo. Name Description1 StatusIndicatorPower Power indicator turns yellow when system is running.Status Status indicator blinks red when data is being read from or writtento HDD.Tx/Rx Tx/Rx indictor blinks yellow when network connection isfunctioning properly.2 USB Interface Universal Serial Bus (USB) ports for additional devices such asUSB mouse and USB Hard Disk Drive (HDD).