Datavideo's DN-600 Video Recorder allows for file-based video recording, saved to a convenient, removable hard drive. The DN-600 comes with a 320GB HDD and a removable hard drive enclosure. One additional enclosure is included, if you would like to purchase another HDD. Once you have completed your recording, simply eject the hard drive enclosure and use USB 2.0 to connect to a PC or MAC based NLE system. The USB port provides power to the unit. It's perfect for use with laptops in the field. You can work directly from the removable drive, or copy video files to your NLE's video drives.