Avtech AVH312 12ch Hd Network Video Recorder Hard Disk Storage	Up to two 4TB HDDs. Ethernet: LAN port: 1000Mbps / Internet port: 10Mbps / 100Mbps Hard Disk Storage Up to two 4TB HDDs Recording Throughput(16CH mode)Up to 480 IPS@1920 x 1080, Up to 120Mbps Compatible OS: Windows 7 / Windows Vista / Windows XP