USB 3.0 external drive on iMac (Intel) possible?

Is there a cable with FW800 and USB 3 connectors? If so, will an iMac (late 2009) Duo Intel talk to drive with drivers from LaCie?
Thanks.

Item Number :
130976
Capacity :
Interface :
Two USB 3.0 ports
Transfer rate :
USB 3.0: Up to 5Gb/s; USB 2.0 : Up to 480 Mb/s.
System Requirements :
Latest version of Windows® XP, Windows Vista®, Windows 7, Windows Server 2008 /Mac OS X 10.5, 10.6 and 10.7
For USB 3.0 Mac compatibility:
Check www.lacie.com/usb3mac for adapter compatibility and the USB 3.0 Mac driver
Computer with a ExpressCard/34 Slot
Dimensions :
34 x 115 x 21mm / 1.33 x 4.53 x .83 in.
Weight :
35 g / 1.23oz
Box Content :
LaCie USB 3.0 ExpressCard/34
Quick Install Guide
Drivers on CD-ROM
Warranty :
1-Year Limited Warranty

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USB 3.0 external drive on iMac (Intel) possible?

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