8CH & 16CH 4K Pentabrid Ultra AI H.265+ DVR XVR8208A-4K-I : 8ch 4K@15fps, 8ch Perimeter Protection, Audio 4/1 XVR8216A-4KL-I : 16ch 4K@7fps, 16ch Perimeter Protection, Audio 4/1 XVR8816S-4KL-I : 16ch 4K@7fps, 16ch Perimeter Protection, Audio 16/1, eSATA Supports 64 channels of IPC @ 12MP, max 256Mbps incoming bandwidth HDMI1 output 4K@60fps, HDMI2, VGA 4ch Video stream Face Recognition 24 Face pictures / second processing 20 Face databases with 100,000 face images in total Alarm 16/6, RS232, RS485, 3 x USB, 2GE 2bay / 8bay SATA HDD up to 10TB each Does not support rackmount. RAID 0,1,5,10 only supported on XVR8816S-4KL-I