InVid Tech VN2A-4X4 Is A High-Performance 4 Channel Network Video Recorder Designed For Professional And Residential Surveillance With Four Easy Plug And Play PoE Ports And Up To 80Mbps Input Throughput Supporting Up To 8 Megapixel Recording For Crystal-Clear Footage And Efficient Ultra 265, H.265 And H.264 Video Compression For Long Term Storage And Smooth Streaming, Featuring Local HDMI Output Up To 3840x2160 And VGA Output For Flexible Monitoring, Simultaneous 4 Channel Playback, Two-Way Audio Input, Free Central Management Software With iOS And Android Mobile Apps And Free Mac Client For System Management, Cloud Upgrade Capability For Remote Access, Smart Analytic Support With SIP, P2P Vision Stream Connect Networking, Multiple Video Search Options Including Smart Search, Support For A Wide Range Of Standard Network Protocols And A Single SATA Interface For One Hard Drive Up To 18TB (Sold Separately), Built Tough With A 48V DC Power Supply, Wide Operating Temperature Range, Rear USB2.0 And USB3.0 Ports For Backup And Peripheral Connectivity, And Comprehensive Certifications For Reliability And Compatibility