Microsoft doesn't have a driver for it for Windows 7 it appears...So, my question is does Dell???
Seems to go in circles here. Microsoft does not do driver development. The manufacturer's do this and if the certification is done in time, then they're included within the windows installation media. Should be one of the Dell listed drivers. Either case it looks like you'll need to open a support case with dell or try asking for help in their hardware forums.
https://www.dell.com/community/Laptops/ct-p/Laptops
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