Hikvision 4K NVR DS-9664NI-M8 64-ch IP camera inputs, 2-ch@32 MP/2-ch@ 24 MP/4-ch@12 MP/8-ch@8 MP/16-ch@4 MP/32-ch@1080p decoding capacity, 400 Mbps incoming bandwidth and 400 Mbps outgoing bandwidth, 2 HDMI (different source) and 2 VGA (different source) interfaces, 8K or dual 4K video outputs,Serial Interface: 1 RS-485 (full-duplex), 1 RS-232, 8 SATA interfaces, Front panel: 2 × USB 2.0; Rear panel: 2 × USB 3.0, Controllable 12 VDC, 1 A power output for external alarm device; The power will be turned on when the alarm output is triggered, Working Temperature:-10 °C to 55 °C, Dimension:445 × 465 × 93 mm, Weight ≤ 10 kg.