... @D1, 4 channel@720P, 4 channel@1080P IP camera inputs, It can support HDMI, VGA, USB2.0, 8 HDDs and eSATA; It ... VGAVoice Intercom1 channel input, BNC(200-2800mV, 30KΩ), 1 channel output, BNC(200-3000mV, 5KΩ)DisplayDisplay Split1/41/4/8/91 ... , Fast play, Slow play, Next file, Previous file, Next camera, Previous camera, Full screen, Repeat, Shuffle, Backup selection, Digital zoomBackup ModeFlash drive ...