APEX SERIES DVR52External Mirror Record: When an AP-ES is present, AP-ES mayuse two of its HDDs for recording, while the other two are used tokeep a copy of recording. For detailed information in regard toutilizing AP-ES, please refer to the AP-ES manual. This function ismainly for special applications. For detailed information, pleasecontact NUVICO.* Warning: For External Mirror Recording, there must beno HDDs installed in the DVR and (4) HDDs installed inthe AP-ES, and all the Hard Disk Drives of the AP-ESmust be the same size. Additionally, the recordingsetting must be lower than D1/15pps/Q5.4.2 USB UTILITYThis menu allows users to update firmware and load/save settingswith a USB thumb drive. Settings(.txt) option is for futureimplementation.5. SYSTEM INFOREMOTE CONTROL ID, KEYBOARD CONTROL ADDR, DVR ID,RECORD NO VIDEO, PLAYBACK DEINTERLACE, ENCODINGPRIORITY (Recording/Network), and KEY TONE, can be adjusted.SYSTEM INFO also displays the Mac Address of the DVR. *Forfaster streaming purpose, DVR may compensate some framesfrom recording when the Encoding priority is set to Network.5.1 SYSTEM LOGAll system-related events and alerts of the DVR are listed inchronological order, starting from the most recent.