USB2.0 camera can use with USB3.0 port.
However, the camera is USB2.0 camera and performance of camera is based on USB2.0 performance.
(USB2.0 camera cannot operate fast more than USB2.0 performance even connecting with USB3.0 port)

Please use “Trigger SDK” or software of “Trigger SDK” to set trigger opration mode for USB2.0 cameras.

The trigger operation mode for USB2.0 camera can be set with “StTrgDisplayVC2005” software of “Trigger SDK” with below procedure.
1. Runs “StTrgDisplayVC2005.exe”.
* if StCamSWare is running, please close it.
For 64bit OS: Runs “StCamUSBPack_JP_(version)\3_SDK\TriggerSDK(version)\bin\x64\StTrgDisplayVC2005.exe”.
For 32bit OS: Runs “StCamUSBPack_JP_(version)\3_SDK\TriggerSDK(version)\bin\x86\StTrgDisplayVC2005.exe”.

2. Selects “On” at “Trigger Mode” on “Trigger Mode” tab of “Setting” window after selects “Setting” under “Mode” on menu.

3. Sets “Hardware” or “Software” at “Trigger Source”.
Software: Software trigger
Hardware: Hardware trigger

Please install and use Sentech SDK package (update4) or later when using STC-MBA5MUSB3 and STC-MCA5MUSB3 camera with StViewer.

Yes, USB3.0 camera can use with USB3.1 port.
However, camera operation is USB3.0 operation.
(When connecting with USB3.1 port, camera cannot operate faster more than USB3.0 performance)

USB cameras can use with Windows XP environment.
Slow frame rate, or image could not acquire image even recognize USB camera may occure depends on performacne of USB host controllor and CPU on Windows XP environment.

It can be checked “Universal Serial Bus Control” in “Device Manager” of Windows.
 
“USB3.0” includes in name of USB host controller if USB host controller is USB3.0 host controller.
“USB2.0” or “USB Enhanced” includes in name of USB host controller if USB host controller is USB2.0 host controller.