Avoid generic "driver update" sites. Use official manufacturer portals whenever possible:
Power Management Module
Download the .cab file containing the updated driver package. Step-by-Step Installation Guide 80211n wifi driver for windows 7 32bit updated
Search the Intel Download Center for legacy Centrino Wireless-N drivers.
Look for an entry containing words like "Wireless," "WLAN," "802.11n," or "Network Adapter." Avoid generic "driver update" sites
Management and Control Module
You see a yellow exclamation mark over your network icon. 80211n wifi driver for windows 7 32bit updated
Realtek kept their 32-bit drivers updated the longest.