mclineParticipantmcline August 26, 2021 at 7:32 am
I would like to use an internal PCIe USB 3 hub to run two VSG60’s and two BB60C’s. I’m looking at using PEXUSB3S7 https://www.startech.com/en-us/cards-adapters/pexusb3s7. Does anyone know of any issues with this hub?
AndrewModeratorAndrew August 26, 2021 at 8:29 am
We use this card in our manufacturing line.
It’s important to know that the number of USB host controllers can affect performance. Each host controller is a 5Gbps link that is shared between 1 or more ports. Most PCs have 1 controller for all available ports. The card I linked above has 2 controllers, where the 2 ports on the left are shared between 1 controller and the two ports on the right the other.
In general if you are running our devices at full data rates (I/Q streaming), you can run 1 or 2 simultaneously on one controller without data loss. It depends on the USB hardware. That means you will need 2-4 controllers for your setup. If you aren’t running them all simultaneously, then this won’t affect you as much.
You might also find a 4 physical core CPU to be insufficient if running 4 simultaneously. I personally haven’t done this before, but I know some customers how have (with high core count Xeon processors).
If you find a configuration that works, let us know, we would love to be able to share with other customers.
APetrovicParticipantAPetrovic September 14, 2021 at 8:41 am
4 port at 10Gbps or 2 port at 20Gbps
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