TheDatavideo HDR-90 is a video recorder for recording one UHD 4K track or up to four 1080p60 tracks to ProRes compressed format (10-bit, 4:2:2), on 2.5" SSDs. With two SSD slots, continuous recording is supported. The recorder offers 1x 4K HDMI input, 1x 12G-SDI input, 3x 3G-SDI inputs as well as an analog audio interface with XLR connectors. A 5" front panel LCD touch screen makes it easy to preview and measure (vectorscope, focus peaking, etc.) video as well as configure the unit. But the HDR-90 is not just an ISO recorder, it can also be used as a simple four-channel HD overhead including quad view display and video source switching by touch.