Based on the model number , you are looking at a Dahua 8-channel Network Video Recorder (NVR) . The specific "8P" in the model name typically indicates that this unit has 8 built-in PoE (Power over Ethernet) ports .
Plug the USB into the NVR, go to > Upgrade on the local interface, and select the file. 4. Important Notes dhinvr4108h8p firmware full