28-06-2021, 10:07 PM
Hello Doug,
both USB 2 and USB 3 support a fixed number of 'end points' if you exceed or get close to exceeding the number of end point then strange things happen.
USB 3 supports less end points than USB 2 does so if you have sound devices, probably best to be on a USB 2 port.
On some motherboards the rear and front ports are on different part of the internal USB architecture so its will distribute the end points across the system for you and avoid crush points. On some Windows systems you will see warning about the number of endpoints being exceeded, I see this on one of my SDR's (ELAD) if I connect the RX audio / data feed to an USB 3 port.
As strange as it sounds, i have CAT on USB 3 and TX / RX audio on the USB 2 ports for best performance, not exactly the logic most would expect as we would naturally think USB 3 = Better but not always.
regards,
Peter
both USB 2 and USB 3 support a fixed number of 'end points' if you exceed or get close to exceeding the number of end point then strange things happen.
USB 3 supports less end points than USB 2 does so if you have sound devices, probably best to be on a USB 2 port.
On some motherboards the rear and front ports are on different part of the internal USB architecture so its will distribute the end points across the system for you and avoid crush points. On some Windows systems you will see warning about the number of endpoints being exceeded, I see this on one of my SDR's (ELAD) if I connect the RX audio / data feed to an USB 3 port.
As strange as it sounds, i have CAT on USB 3 and TX / RX audio on the USB 2 ports for best performance, not exactly the logic most would expect as we would naturally think USB 3 = Better but not always.
regards,
Peter
Peter Sumner, vk5pj
You have enemies? Good. That means you've stood up for something, sometime in your life.
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You have enemies? Good. That means you've stood up for something, sometime in your life.
- Winston Churchill