Mainboard is not P5P43TD.
Is P5P43TD USB3.
As per this comment " during connection device (denebola board) the standard message "this device can work faster, if you connect it to a USB3 port" is displayed ", the device is establishing the High-Speed connection. Hence, the API returning High-Speed.(working as expected).
Are you sure that you are connection to USB 3.0 Port on Host side?
Download USBLyzer (USBlyzer - USB Protocol Analyzer and USB Traffic Sniffer for Windows ) and see the connection type.
You can also connect any other USB 3.0 device (Pen Drive) and the connection established( High-Speed or Super-Speed) in USB Lyzer.
What is the firmware that you are using on your board?
Can you try USB Bulk Source Sink example firmware and collect the logs and see? Refer section 2.1 in the attached FX3 SDKTroubleshooting Guide.
This message is also shown if one of the upstream hubs are connected at HighSpeed instead of SuperSpeed. It's possible you have a device driver issue in the system, unrelated to Cypress, or are using a USB2 port on the system.
I assume that you indeed connect CX3 to the USB2.0 host or USB2.0 port. Please check that.
Thank you very much for your response.
Physically, I connect Denebola to PC port USB3 (it's blue)
but I'm watching the program usbTreeView
This program shows that there is a logical connection to the port USB3
Can you try USB Bulk Source Sink example firmware and collect the logs and see?
Now I try it
Can you please update what happened ?
The old driver USB3 was installed.
In any case, I plan To transfer the product to the customer along with the adapter PCI-E to USB3.
Ok. Thanks for the prompt response.