This message was posted on behalf of Intel Corporation
We understand you replaced the Wireless adapter in your PC with an Intel® Dual Band Wireless-AC 8265 and the upload speed from your NAS is not the one expected.
Please keep in mind that Intel does not support, nor recommends end users install or upgrade the various Intel® Wireless Adapter, since this may lead to installation errors, connection issues, software error messages, and in some cases it may even be illegal.
You should always contact the Computer Manufacturer Support or its authorized representative to confirm compatibility and have it replaced with them whenever possible. For more information, please check the following advisories:
Regulatory Information Regarding Hardware Installation or Upgrade
Why Doesn't My Laptop Recognize My New Intel® Wireless Adapter?
In our best effort, here are some items for your consideration:
- Make sure you remove old drivers and software from the Dell* wireless adapter.
- Install Intel® PROSet/Wireless Software and Drivers for Windows® 10* [19.60.0].
- Apply the Recommended Settings for 802.11n Connectivity.
- Review the QOS configuration of your Wireless access point, make sure WMM is enabled, also, disable bandwidth control features or any other type of white-lists. If they will be enabled, you can set high priority for the AC 8265 (please check with the AP manufacturer for details about this).