2.0 Network Adapter — Realtek Rtl8188cu Wireless Lan 802.11n Usb

This chipset powers millions of generic USB adapters. If you bought a cheap "Mini Wireless N USB Adapter" from Amazon or eBay ten years ago, it almost certainly had this inside.

150 Mbps (Achieved exclusively on 802.11n using a 40 MHz channel width) This chipset powers millions of generic USB adapters

2.400 GHz to 2.4835 GHz (5 GHz bands are completely unsupported) The Cause & Solution: This is a hardware

The adapter can see older networks but not your new Wi-Fi 6 router. The Cause & Solution: This is a hardware limitation, not a bug. The RTL8188CU chipset only supports 802.11a/b/g/n on the 2.4GHz band. It cannot negotiate the newer protocols used by Wi-Fi 6 (802.11ax) or Wi-Fi 5 (802.11ac) on either 2.4GHz or 5GHz bands. The final drivers for this chipset were released around 2016-2017, so a software fix is not possible. Your only solution is to upgrade to a more modern adapter. The final drivers for this chipset were released