Product Description 4-Channel Compact Digital Video Recorder with Fixed HDD Rack Product Overview: VG-4004FD is a 4-channel compact DVR with motion detection record function & USB2.0 for video backup to computer. Advanced M-JPEG hardware compression provides hi-resolution playback picture quality. The DVR is ideal for usage in home to watch over premises & valuables and in business to monitor customers & staff. Product Features: 1. Mini design for homes, small retail stores, offices 2. High resolution picture quality 3. Motion detection recording 4. Motion detection with sensitivity & area settings 5. With auto record function 6. One IDE Hard Disk Interface, supports up to 500GB HDD 7. Built-in USB2.0 port for video backup to computer 8. With auto-switch display function 9. Password protection 10. With IR remote control 11. Self-recovery after power reconnected