2 little issues.

Finally got macOS Sierra running. However there is 2 issues I am having.

1. I bought a WiFi usb stick that works with Sierra. Connecting to my WiFi network works fine. It’s when I open safari it doesn’t want to load any pages. While all settings say it’s connected with internet. However when I use the xfinity WiFi (my isp) login and browse the web it works. How can I fix that?

2. How can I find what graphics I have so I can get the kext for it. Upon googling I get different answers

I have the EliteBook 8460p

Thanks in advance 😄