OK, I bought an used laptop Dell Latitude E6230 wth Windows 7 Pro installed on it (and Intel USB 3.0 drivers installed, I checked the devices manager).
For me it was the perfect candidate for testing the modded USB 3.0 drivers because it has all drivers for XP except the Intel USB 3.0 drivers.
I used a disk image of Windows XP Pro SP3 prepared with Sysprep and 5,7 GB of drivers from DriverPacks injected into the disk image.
With the genuine acpi.sys and acpi.inf files :
No yellow marks, all is working as expected, the USB ports are in 2.0 mode.
Now with the modded acpi.sys and acpi.inf files (I injected the files via Hiren's Boot CD before the first start of the disk image and the execution of Sysprep) :
Now, step by step, how to install the modded USB 3.0 drivers ?
On the pictures, do not made aware of the name of the computer, it's a E6230 !
Best regards