The Difference Between the system with hard drive and without hard drive.
Hard drive is for data storage. That's means the system with hard drive would be able to record and playback,
the system system with hard hard drive would not record. You can purchase and install the hard drive
yourself if you choose the system without hard drive.
Option: 2x Cameras;Without hard drive
Option: 2x Cameras;With 1TB hard drive
Option: 4x Cameras;Without hard drive
Option: 4x Cameras;With 1TB hard drive
