Video Input: 4.8.12.16cams Audio Input: 2 Channels Resolution;320*240 / 640*240 / 640*480 Offer vedio card SpecificationVideo Input4.8.12.16camsAudio Input2 ChannelsRecording /Display Rate30FPS(NTSC) / 25FPS(PAL)Video Resolution320*240 / 640*240 / 640*480Multi-Card StackSupportWatch Dog(Hardware)Support System RequirementsOS SupportWindows 2000 / WindowsXPMotherboardIntel Pentium IV 2.0GHz or ...