Although XFP Optical Modules and SFP+ Optical Modules are not physically interchangeable, they can coexist in the same Ethernet network. Optical modules typically have an electrical interface on the side that connects to the inside of the system and an optical interface on the side that connects to the outside. As an essential component of optical fiber communication, optical modules are optoelectronic devices that facilitate the conversion between optical and electrical signals during the transmission process. This article provides a clear and structured explanation to help answer those questions. An. Non-Huawei-certified optical modules cannot ensure transmission reliability and may affect service stability.