NV8008HF:

8 ch Video+8ch Audio, 4CIF record all channel, 240 fps

NV8008HC:

8 ch video + 8 ch Audio(240fps ) 2 ch playback, 6XCIF+2XD1, 240 fps

NV8008HS:

9 ch video,2 ch playback, Looking output,CIF 240 fps SATA support selectable

NV7008H:

8 ch video, 1 ch playback, CIF 120 fps

NV7208H:

8 ch video,4 ch audio, 1 ch playback, CIF 240 fps, support two sata HDD