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64Ch NVR, 640Mbps, (2) NIC Cards, 8 HD Bays, Up to 16 Megapixel  Features Up to 16 Megapixel Resolution Recording 640 Mbps Bit Rate Input Suppor...

64 Ch NVR, 512 Mbps, (4) NIC Cards 16 HD Bays, 4K, With Cloud Upgrade Features 64 Channel IP Camera Input* Up to 12 Megapixel Resolution Recordi...

64 Ch NVR with 24 Plug & Play Ports, 384/200 Mbps, 4 HD Bays, 4K, With Cloud Upgrade and Smart Features  Features Smart Analytic Support/ 8CH ...