Audio, video, timecode, and control information is passed through a single FireWire cable to the FS-100 while you roll tape in the HDX-900 simultaneously! Designed for use in even the roughest conditions, the FS-100 mounts directly to the camera and includes an electronic shock cache to ensure that you never lose footage. When shooting is finished, connect the FS-100 to a computer and instantly be ready to edit. The 100GB hard drive provides 1.5 hours of DVCPRO HD recording time.