I know this is an old topic, but
USB 3.0 issues
Advantage keyboard’s currently do not work on most Windows 7 computers which have USB 3.0 ports, even if they also have USB 2.0. This problem does not exist in other operating systems, including Windows 8, Mac & Linux.
Possible work-around: If your Windows 7 computer only has USB 3.0 ports available, enter the BIOS of your computer during bootup. Look for “USB Configuration” section in which there may be a checkbox or option for “Enable USB 3.0 Controller”. Uncheck the box or disable USB 3.0, reboot,and test keyboard. If that is not there, or you don’t want to do disable 3.0, try “enable USB debug.” Another possible option is to disable the “Intel xHCI Mode”. If the BIOS on your computer does not list this as an option or you are unable to fix the problem, contact Kinesis Technical Support about a cable conversion kit (no charge within 60 days of purchase, though international shipping charges may apply, otherwise $25 plus shipping for keyboards still under warranty). Email: techsupport@kinesis.com or call 800-454-6374 (option 2) 8am – 4:30pm, M-F.
http://www.kinesis-ergo.com/support/technical-support/troubleshoooting-advantage/