16CH 8HDD 4K/4MP Pentabrid Ultra DVR 16 channel H.264+ Pentabrid 2U DVR; Auto-detect HDCVI / AHD / TVI / CVBS 1st & 9th ch 4K@15fps / others 4MP@15fps recording. Supports 16+48 IPC (up to 12MP) HDCVI / CVBS Loop Out, Spot Output, Video Matrix Max 256Mbps Input, 384Mbps Transmission 2 HDMI + TV + VGA display output, RS485, RS232, RS422, 4 x USB, 2 x GE port Max 8 x HDD up to 8TB each, e-SATA, Audio 16/1, Alarm 16/6; iSCSI Intelligence Features: Tripwire, Intrusion, Smart Tracking, People Counting, Face Detection