The 802.11n standard (Wi-Fi 4) was a massive leap forward, introducing MIMO (Multiple Input Multiple Output) technology to increase data speeds and stability. While modern Wi-Fi 6 is current, many Windows 7 machines rely on the 4.80.28.7 release because:
Specifically optimized for older wireless setups and hardware using Broadcom chipsets, though it can support various internal and external (USB) 802.11n adapters. wlan driver 802.11n rel. 4.80.28.7.zip for windows 7