This message was posted on behalf of Intel Corporation
As we understand, you wish to replace the wireless adapter in your PC for a newer Intel® Wireless Adapter that supports Windows® 10. In this case, we advise you to check with the Computer Manufacturer Support, they are the best resouce to let you know which adapters are compatible with your computer.
Intel does not recommend end users install or upgrade the various Intel® Wireless Adapter. They can only be installed by the manufacturer or its authorized representative. Using an unsupported adapter may cause connection issues, software/boot error messages, it may violate country regulations and may even be illegal. Please check the following documents for more information:
Regulatory Information Regarding Hardware Installation or Upgrade
Why Doesn't My Laptop Recognize My New Intel® Wireless Adapter?
Please contact Fujitsu to know if your computer is compatible with a newer Intel® Wireless Adapter. You can find a table of adapters and the Operating systems they support at the following link:
Supported Operating Systems for Intel® Wireless Products