You have to set your computer's IP to be in the same subnet as the built-in POE switch's IP like Buellwinkle said.
For example:
If your built-in POE switch has an IP of 192.168.188.1, then each camera connected to it will be 192.168.188.x. so you plug computer into it, set your computer's LAN address to 192.168.188.x, then just punch up each IP of the camera and it'll come up.
If you frequently have to do this and don't want to keep changing your computer's LAN back and forth, there's an option called "alternate configuration' in your computer's network setting where you added the configuration of the POE switch and keep the main configuration as 'obtain ip address automatically'.
[attachment=0]Picture of network setting.JPG[/attachment]
thats what iv did , as you and buellwinkle said.thats why its make me crazy!!!nothing !!!!!!!!!!