GW Security Inc GW1008HDSDI HD-SDI High Definition 8 Channel DVR 1920x1080P at 30 fps Record Resolution 8CH Video-input, 2CH Video-output (VGAHDMI) 8CH Audio input, 1CH Audio output (RCA) 1920x1080P Record resolution, 30FPS(each Ch.) Support E-SATA, only for backup 8ch sensor input, 1 channel alarm out Support VGA: 800*600,1024*768, 1280*1024,1440*900, 1920*1080 Support HDMI: 1920*1080P Output 2 SATA HDDs, up to 8TB Only connect to HD-SDI Cameras