Lenovo z580 wifi speed upgrade

What wireless bands does your router support? You will probably be more limited by the speed of your broadband/router than the WiFi card.
 
You could get a dual band wifi card, like an Intel 7260-AC or the older Centrino 6205.

Does your current card not provide the full download speed?
 
If your current card supports it, try the 5GHz band. If not, then you'll need a dual band wifi card. The above two should work.
 
Back
Top Bottom