The Datavideo HDR-40 is a hard drive-based video recorder designed for studio desktop applications. It records from SD and HD video sources via SDI and provides HDMI output. The removable hard drive enclosure includes a convenient USB 2.0 connector and SATA connection. Once recording is complete, the hard drive carrier simply ejects and connects to a PC or Mac-based NLE system via USB without needing an extra power supply.