This message was posted on behalf of Intel Corporation
Thank you for contacting us, we are here to serve.
I regret to inform you that Intel Customer Service no longer responds to telephone, chat, or e-mail inquiries for Intel® Wi-Fi Link 5100 but you may want to try our Discontinued Products Community to get recommendations from fellow community members when it comes about drivers, since you equipment only supports drivers up to Windows* 7.
Here is the direct link:
You may also find the Discontinued Products Website helpful to address your request:
https://www.intel.com/content/www/us/en/support/discontinued-products.htmlDiscontinued Intel Products – Customer Support Options
Regarding the Wireless card upgrade, the best recommendation at this time is for you to contact the respective system manufacturer since the wireless integration for laptop adapters is subject to regulatory approval due to FCC or similar local regulations. Only the system manufacturer is entitled to provide the list of validated cards that are compatible with your system.
Here is Dell's* support link:
Support | Dell US
I hope this helps, please let me know if you have any other question or concern.