A known limitation for this specific driver version and chipset is that , even if the hardware theoretically supports 5GHz.
If you are stationary (desktop PC), set to Lowest (1). This prevents your adapter from scanning for other APs, reducing latency. 80211n usb wireless lan card driver version 51220
Always restart your computer after a driver update to ensure the changes take full effect. A known limitation for this specific driver version
Devices using this driver are typically unbranded or generic USB Wi-Fi dongles purchased through third-party retailers. Because they are often generic, they rely on standardized Ralink or MediaTek driver packages rather than custom manufacturer software. Ralink 802.11n Wireless LAN Card Driver for System Always restart your computer after a driver update
By default, the driver may limit to 20 MHz for “stability,” but that caps speed at 72 Mbps (for 1x1) or 144 Mbps (for 2x2).
Supports WPA-Personal/Enterprise, WPA2-Personal/Enterprise (TKIP/CCMP), and legacy WEP. HP Support Community Common Use Cases