If you purchased a DVR without hard drive, you can install a hard drive by yourself. It's easy and fast.
Step 1:
Use your screw driver to open the DVR case.
Step 2:
Connect 2 Cables with your Hard Drive. (One is for power, another one is for signal)
Step 3:
Use Screws to mount the Hard Drive in the DVR's Hard Drive slot.
Step 4:
Close the DVR case.
Step 5:
Turn on DVR, follow the screen to do format hard drive. (only 1 or 2 clicks)

