When I connect more than one camera to my pc I get interference on the screen causing the motion sensing to kick in. Im trying to run all 3 of my cameras from one pc that will do nothing but serve as a surveillance system. Heres the pc's specs and below a few pics of whats happening. 1 camera at a time works flawlessly.
AMD dual core 2.4
4 gigs ram
onboard nvidia graphics (probably 256)
Cameras are all microsoft vx-1000 life cams all running on 32 foot active repeater extension usb cables