：Atheros（后被 Qualcomm 收购）和 OEM 厂商（如 Acer、Dell）提供的官方驱动大多较为陈旧。这些旧版驱动在与最新的 Windows 更新（如 20H2 或更高版本）协同工作时，可能会出现兼容性问题。此外，Windows 10 或 11 系统有时会自动安装或更新不兼容的蓝牙驱动，导致蓝牙功能失效。
: Users report significant improvements over single-band cards, with stable 5GHz connections achieving speeds up to 300Mbps. atheros ar5b22 driver
: This module is also commonly referred to as the Qualcomm Atheros AR5BWB222 , AR5BMD222 , or Killer Wireless-N 1202 depending on the laptop manufacturer customizations. How to Find and Download the Safe Driver To enable it in /boot/loader.conf :
/* Start monitoring */ INIT_DELAYED_WORK(&priv->monitor_work, ar5b22_enhanced_monitor); schedule_delayed_work(&priv->monitor_work, msecs_to_jiffies(100)); atheros ar5b22 driver
To enable it in /boot/loader.conf :