Using the Front Panel for Operations257 Select [YES] with the arrow buttons (left or right) andthen press the [SET] button.8 Select the extension unit's number where you installedthe HDD with the arrow buttons (up or down) and pressthe [SET] button.9 Select [YES] with the arrow buttons (left or right) andthen press the [SET] button.All the HDDs installed in the extension unit are recognized forrecording.Press the [SET] button to return to the time display formatscreen.10 Close the front cover of the extension unit and lock it bylightly pressing and turning the key to the left.• Keep the key in a safe place.11 Check the disk information.Check the following content related to the HDD under [Diskinformation] on the settings menu of the network diskrecorder. Refer to the network disk recorder's SetupInstructions (PDF file) for more information.• HDD capacity• HDD remaining capacity• Hour meter• Disk operation mode• Date range of video recorded on the HDDYou can remove HDD units in the extension unit while it is inoperation.Also, refer to the network disk recorder's Installation Guide.1 Insert the key (included) into the key hole and turn itwhile pressing in gently to open the front cover.The following operation is done on the networkdisk recorder2 Press the [USE] button for over 2 seconds.A buzzer sounds.Press the front panel buttons according to the directions onthe LCD.3 Press the arrow buttons (up or down) on the front paneluntil [HDD Operation] appears on the screen.4 Press the [SET] button.5 Press the arrow buttons (up or down) on the front paneluntil [Remove HDD] appears on the screen.6 Select [YES] with the arrow buttons (left or right) andthen press the [SET] button.7 Select the HDD to be removed (Network Disk Recorder:MAIN, Extension Unit (x): EXTx) with the arrow buttons(up or down) and then press the [SET] button.(2)(1)Removing HDDs(1)(2)