An update to increase the maximum transfer size of USB storage devices in Windows 7 or in Windows Server 2008 R2

This article introduces a new feature that enables you to update the maximum transfer size of USB storage devices in Windows 7 or in Windows Server 2008 R2. After you install this update, you can increase the maximum transfer size from 64 kilobytes (KB) to 2 megabytes (MB) in the Usbstor.sys driver.


http://support.microsoft.com/kb/2581464