Huawei's datacom portfolio includes the "Four Engines," which represent key product lines for different networking domains:

NetEngine:High-performance routers for enterprise WAN and data center interconnects.

CloudEngine:Data center switches designed for high-density, low-latency environments.

AirEngine:Wireless access points (APs) for Wi-Fi 6 and beyond.

HiSecEngine:Security products, including firewalls and intrusion prevention systems.

The optionAREnginedoes not belong to the "Four Engines" lineup. It appears to be unrelated to Huawei's official datacom product categories.