QSDR174RTC User Manual6Chapter 3: DVR Installation3.1: Hard Drive InstallationCaution: NEVER Install or remove the hard drive while the DVR is running!The model has a Hard Disk Drive (HDD) drawer. Please use key provided to open the drawer and insert the HDDas follows:(1) Remove screws and open DVR upper cover carefully;(2) Insert Power Cord and data cable securely into matching ports on hard drive;(3) Put the upper cover back carefully, re-attach screws.3.2: Connecting Your DVR to Cameras and a MonitorConnect camera cable to the Video Input port of the DVR. Connect the monitor to the Video Output port of the DVRusing a BNC connector (See Rear Panel Section 2.2).To connect a PTZ speed dome to your DVR System, connect your PTZ Camera data cables to your RS485 A & Bports. See Chapter 5 for a more detailed account of PTZ Camera configuration instructions.3.3: Connecting the Power SupplyOnly use the power adapter supplied with your DVR System. Failure to do so may result in unforeseen systemfailures.