About USB 1.1 and 2.0 drivers
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The operating system must support USB 2.0 in order to achieve USB 2.0 performance. If your operating system does not support USB 2.0, your USB 2.0 peripheral will only operate at USB 1.1 (12Mbit) speeds. 
If you do not have an operating system that supports USB 2.0, the recommendation is to disable the feature in the System BIOS Setup program. 


Operating System 	USB 2.0 requirements 
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Windows* XP 		USB 2.0 drivers are provided in Service Pack 1 (SP1) for Windows XP,
			which is available through Windows Update*. 

Windows* 2000 		USB 2.0 drivers are available through Windows Update or ServicePack4 (SP4). 

Windows* 98SE/Me 	USB 2.0 drivers are available on the Intel developer site. 

Windows* 98 (Retail) 	Developers and OEMs should contact Orange Ware. For end-users, if 				your device does not ship with Windows 98 drivers, contact your 				device or system manufacturer. If USB 2.0 drivers are not available, 				your device will operate at USB 1.1 speeds 

Linux* 			USB 2.0 support is available in kernel 2.4.19 or later development 				kernels, or in the 2.4.19 or later production kernel. More 					information. 




Links:
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http://downloadfinder.intel.com/scripts-df/Detail_Desc.asp?agr=N&ProductID=939&DwnldID=4406
or
http://www.intel.com/support/chipsets/usbdriver.htm