16 Channel Penta-brid 4K 1U Digital Video Record4K@7fps,6MP@10fps,5MP@12fps,4MP@15fp,4M-N/1080P/720P@25fpsH.265+/H.265/H.264+/H.264 dual-stream video compression25CH @4K, 6MP, 4MP, 1080P@25/30fps Live View, 16CH PlaybackPentabrid (IP+CVI+AHD+TVI+CVBS) N+M 16+16CH IP up to 8 Megapixel (128 Mbps)Support Smart Search & IVS: Face, Tripwire, ...4/1 Audio In/Out16 Alarm IN / 3 Relay OutSupports Coaxial Audio/Upgrade/Alarm2 SATA Port , Up to 10 TB for each HDD1*HDMI(4K), 1*VGA ,simultanous video OutputRS485 for PTZ support2*USB(1 USB2.0 , 1 USB3.0)1*10/100/1000 Mbps LAN InterfaceSupports P2P , IoT, POS Fuction