CONNECTION AND SETUP42. CONNECTION AND SETUPBefore the DVR is powered on, make sure you have installed a hard disk, connected at least one camera and aHDMI monitor. For details, please refer to the following sections.Note: The DVR is designed to automatically detect the video system of the connected cameras (NTSC orPAL). To make sure the system detection is correct, please check if the cameras are connected tothe DVR and power-supplied before the DVR is powered on.2.1 SATA Hard Disk InstallationA SATA hard disk must be installed before the DVR is powered on.Note: It’s not recommended to use a green hard disk in this device. Please check our hard diskcompatible list at page 73.Note: It’s recommended to clear all data in the hard disk when the DVR is powered on and the date &time are set correctly to ensure the recorded data are not mixed with other data previously savedin the same hard disk. For details, please refer to “2.6 Clear Hard Disk” at page 8.Step1: Loose the screws on the upper cover and open the upper cover of the DVR.Note: The DVR cover is made of metal. Please be careful with its edge when you remove the cover.Step2: There are two hard disk brackets for this DVR asindicated in the right picture.2-1 To install on the first bracketRemove the bracket, and align the screw holes of thebracket with the hard disk’s screw holes. Make sure thePCB side of the hard disk is facing up.Fasten the hard disk to the bracket, and connect thepower connector and data bus connector to the harddisk. Then, replace the bracket to DVR.2-2 To install on the second bracketConnect the power connector and data bus connectorto the hard disk.Align the screw holes of the bracket with the hard disk’sscrew holes. Make sure the PCB side of the hard disk isfacing up. Then, fasten the hard disk to the bracket.Step3: Close the upper cover of the DVR, and fasten all the screws you loosened in Step1.