华硕经典无线路由器AC68U的第三方固件，HGG在梅林380.70固件基础上修改。固件的最大亮点是WiFi最大发射功率可达到1000mW（可调），穿墙效果和信号覆盖范围极为理想，是大户型路由器的必刷固件。

大名鼎鼎的HGG固件，保留华硕路由器官方固件功能同时引入无线功率调节，可以按需增加无线功率。

Merlin By HGG功率介绍： 1% => 42mW (16.2 dBm) 25% => 83mW (19.2 dBm) 50% => 178mW (22.5 dBm) 75% => 355mW (25.5 dBm) 100% => 1000mW (30 dBm) Merlin By HGG 支援机型： SUPPORTED MODELS: ================ RT-N16, RT-N66U, RT-AC66U, RT-N18U, RT-AC56U, RT-AC56S, RT-AC68U, RT-AC68P, RT-AC87U, RT-AC88U, RT-AC3100, RT-AC3200, RT-AC5300 U, R, W and P variations are also compatible. // U、R、W、P不同版本的介绍 U - Base Model R - Retail Model W - White Color P - New model also known as RT-AC68U V2.