Getting your 802.11n WLAN adapter running on Windows 7 usually involves finding the right driver for your specific hardware chip, as "802.11n" is a technical standard rather than a brand
Windows 7 natively supports , with back-compatibility for NDIS 5.x. Most 802.11n drivers for Win7 are NDIS 6.20 miniport drivers.
Or more thoroughly:
The driver acts as a translator between your Windows 7 operating system and your wireless network adapter (whether built-in laptop card, USB dongle, or PCIe desktop card). Specifically, the :
Windows 7 reached End of Life (EOL) in January 2020. It no longer receives security updates (unless you paid for Extended Security Updates – rare for consumers).
netsh wlan show drivers // Confirm 802.11n support (Radio types supported) netsh wlan set autoconfig enabled=yes interface="Wi-Fi" netsh wlan set profileparameter name="SSID" connectionmode=auto