Question Can I upgrade the WLAN card in my Cyberpower Xplorer laptop?

Yes, you can replace/upgrade your current device. However, that may not actually resolve the issue.

Are you getting a strong signal when you normally connect to your wireless network? Do any other devices suffer similarly?
 
Thanks for your reply. I got fiber optic cable earlier this year and I find that my Internet speeds are way lower on the Xplorer than on my other newer laptop. The main difference between the two, other than age, is that my new laptop has 16GB RAM, whereas the Xplorer has 8GB. As long as a new WLAN card isn't overly expensive, I'm willing to give it a shot, but I have no idea what card to buy or where to find it.