Lenovo USB 3.0 Port

In Windows 7 and even XP you could right click a USB hub in Device Manager and see the power consumption. In Windows 10 you can't.






I personally use a USB power meter to see what the Amp consumption is of my USB devices.
A computer will dish out a max of 500 milliamps (half an Amp) per bus. If you go above that you'll have issues. That's where a good quality powered USB hub comes in at. Preferably one that is UL listed for safety like this one. I own the 4 port and 10 port. For your application I'd use the 10 port. The 4 port only provides a total of 900 mA and they specifically state right there on Amazon that multiple hard drives would not work, yet a user made a video showing how the product is inferior because her two hard drives won't work with the USB hub.

However, do these cameras have their own power source? If so, then I would say it's not a power issue with the USB ports. It could be software running on the computer or it's the chipset. If possible try safe mode. Or maybe boot the computer with a minimalist of stuff running in the background. Another thing you want to check is whether the computer has your USB ports set to go into power save mode (default config.). Right click the hubs in Device Manger and uncheck that.

F22 Simpilot said:

In Windows 7 and even XP you could right click a USB hub in Device Manager and see the power consumption. In Windows 10 you can't.






I personally use a USB power meter to see what the Amp consumption is of my USB devices.
A computer will dish out a max of 500 milliamps (half an Amp) per bus. If you go above that you'll have issues. That's where a good quality powered USB hub comes in at. Preferably one that is UL listed for safety like this one. I own the 4 port and 10 port. For your application I'd use the 10 port. The 4 port only provides a total of 900 mA and they specifically state right there on Amazon that multiple hard drives would not work, yet a user made a video showing how the product is inferior because her two hard drives won't work with the USB hub.

However, do these cameras have their own power source? If so, then I would say it's not a power issue with the USB ports. It could be software running on the computer or it's the chipset. If possible try safe mode. Or maybe boot the computer with a minimalist of stuff running in the background. Another thing you want to check is whether the computer has your USB ports set to go into power save mode (default config.). Right click the hubs in Device Manger and uncheck that.

Well, it's not the camera's drawing current through the USB Ports, it's the capture cards I have to use to convert HDMI to USB. And yes, they're powered by the USB port and do not have external power source. I guess I could look for capture cards that do have external power??? However, I was thinking the limit was the 5GHZ bandwidth with two camera's at 1080p.

PS... I never thought to count the HUBs in device manager to see how many I have or which flavor?

Soapm said:

PS... I never thought to count the HUBs in device manager to see how many I have or which flavor?

Before you count them, you should check if they've all properly been installed. Here is an old example of what might happen if you don't:
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FWIW, my laptop does have two separate "Intel(R) USB 3.10 eXtensible Host Controller - 1.20" devices listed under Device Manager.

Yes you do, I see that... Thanks...

In the Device Manager change the View to "Devices by connection".

Trace the two cameras back to the USB Root Hub.

Usually 2 USB ports placed close on one side of a Laptop are using the same Hub.

"However, I was thinking the limit was the 5GHZ bandwidth with two camera's at 1080p."

It is 5 Gbps, HD video 1080p one channel is about 15 Mbps, so say 30 Mbps total, so 5,000 Mbps is more than enough.

I would look at the hardware specs of your "capture cards I have to use to convert HDMI to USB. "
You would be looking to at least HDMI 2.0, preferably 2.1 specs.

Also the lengths and quality of USB and HDMI leads.

Essentially the whole system from cameras to display.

Since they were both on the same USB 3 bus being on the same side of the motherboard and according to device manager. So what I did was unplugged one camera and installed it in vMix then reversed it and installed the other. When I rebooted with the both plugged in they were both recognized and played just fine. Thanks for all the help.