There's only one kind of USB 2, no high-speed USB 2 and low-speed USB 2.
And the manual of your motherboard or your add-on card will tell you if it's 1, 2 or 3.
Kees
Windows 7, 32 bit, Intel pentium 4, ASUS motherboard on MP Media Center M1171n. I've upgraded the power supply and video card.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic