Using Thunderbolt with Boot Camp and Windows 7
Summary
Thunderbolt enabled Mac computers can use Thunderbolt technology while running Boot Camp with Windows 7. Learn more about the behavior of Thunderbolt devices using Boot Camp and Windows 7.
Products Affected
MacBook Pro (17-inch, Early 2011), MacBook Pro (15-inch, Early 2011), Thunderbolt cable (2 m), MacBook Pro (13-inch, Early 2011), Boot Camp, Windows 7
Read more http://support.apple.com/kb/HT4617