problem interfacing multiple usb devices with activeX and .net

[sdkpark]

Hello,

I am having some difficulty interfacing multiple usb devices. 4 usb devices use activeX and 1 usb camera uses .net.

If I run/initialize all 5 usb devices, the camera (that uses .net) does not run properly. The camera runs properly when running by itself. I was wondering if there is some limitation with interfacing multiple usb devices with different protocols. Any help would be appreciated. Thanks!

[Kyle97330]

It could be a power draw issue... how many of those devices are bus-powered and how many have internal power?  If you use a camera that needs a lot of power on the bus after the other 4 start using it, there might not be enough left over.

If it is a power issue, it could be you need to switch to using a powered USB hub in between your PC and the camera, or put all 4 other USB cameras on your USB 2.0 ports and your camera on a USB 3 port, since some motherboards have separate power lines leading to the different USB types.

[sdkpark]

thanks for the reply! I really appreciate the help.

I am using a powered usb hub and I have tried directly connecting the camera to the computer.

I was suspecting it had something to do with a few devices using activeX and the one camera using .NET.