APPENDIX 3. Play process after backing up DVR files to USBdevice(I)Formatting in advance :Reminder: if you wish to backup previous recorded historic data through the USB Port, it issuggested to first format the USB device through the DVR in order to ensure that the USBdevice could be accurately identified by the DVR and backup data properly; the steps areas follows:(1) Insert the USB device into the USB Port in front of the DVR.(2) Enter Menu => Advanced => Disk Format, select the USB Disk and execute theformat action.59