User`s manual
primary ATA interface is HDD A, the slave is HDD B. The master HDD connected to secondary ATA interface 
is HDD C, the slave is HDD D. 
 The record sequence: HDD A→HDD B→HDD C→HDD D 
 Overwrite sequence: The sequence is irrespective with HDD. The DVR over write HDD from the oldest 
record file when HDD is full.   
Motherboard
⑶ Operation 
① Put the HDD into the HDD fixation rack. If the user wants to install more than two HDD, please 
install the HDD into the rack below first. 
 Fix the HDD by two screws on both sides   
③ Connect the HDD cable. There are three interfaces on cable and each of them can be connected with 
the master HDD or the slave HDD, motherboard. (There are 39 pins in two rows, 20 pins are in one row and 
13










