Seculink AVR7804LN - Connection and Setup; HDD Installation

CONNECTION AND SETUP
Before the AHD DVR is powered on, make sure you have installed a hard disk and connected at least one
security camera. For details, please refer to the following sections.
The DVR is designed to automatically detect the video system of the connected cameras (NTSC or PAL).
HDD Installation
A SATA HDD is required before the DVR is powered on.