KGuard BR401-4CW154M All-in-One H.264 Surveillance Combo Kit with 4-Channel DVR and 4 Weatherproof Day/Night Cameras Hard Drive: Up to 2TB Network: RJ45, 10M/100M, Supports TCP/IP, DHCP, DDNS, PPPoE; Supports IE/ Safari Browser Operating System: LINUX Remote surveillance solution USB 2.0 for Mouse and File Backup