Jeff Roberts (aka USBMan) explains how to check for high speed USB 2.0 support:
Here’s the screenshot-by-screenshot way of getting there.
If your Device Manager shows an ENHANCED USB Host Controller, the system has High Speed USB (USB 2.0) capability.
Types of High Speed USB (USB 2.0) Host Controllers
- Intel Enhanced
- SiS Enhanced
- VIA Enhanced
- ALi Enhanced
- Standard Enhanced
- NEC Enhanced
The system shown has onboard Intel High Speed USB (USB 2.0) with an NEC High Speed USB (USB 2.0) PCI card installed.
The key word is ENHANCED. If you have an ENHANCED USB Host Controller then you have High Speed USB (USB 2.0)
All other types are USB v.1.1
The difference between v.1.0 and v.1.1 is explained here.