Getting an older Windows 7 machine back online can be a challenge, especially when "802.11n WLAN Adapter" is the only name you see in the Device Manager. Because this is a generic term used by many manufacturers, finding the right driver requires a bit of detective work.
Right-click the device in Device Manager and choose "Disable," then "Enable." 802.11 N Wlan Usb Driver Windows 7 64 Bit Download
Be very careful searching for drivers on third-party "driver database" sites. Many of these sites bundle malware or adware with the installer. Always prefer the official chipset manufacturer website (Realtek, MediaTek, TP-Link, etc.) or use the CD that came with the adapter. Getting an older Windows 7 machine back online
The Dell Wireless 1520 802.11n Driver is available for Dell-specific hardware. How to Identify Your Driver (If Brand is Unknown) 802.11 N Wlan Usb Driver Windows 7 64 Bit Download