Supplied with free viewer software. Ethernet / LAN connectivity for remote access and control. Built-in web server makes remote live view, playback, and recording via web browser easy. Integration USB port for export to memory sticks. Advanced embedded operating system (LINUX). Built-in DVD writer for archiving recorded video. Removable HDD, providing flexible large storage capacity. Programmable recording quality. Intelligent record, search, and playback functions. Single channel audio recording and playback.