A single-mode optical module can use only the single-mode optical fiber, similarly, a multi-mode optical module can use only the multi-mode optical fiber. Check whether the optical module is a Huawei-certified one. Perform a. Optical modules are widely used in switches, network interface cards (NICs), routers, and other communication devices. During use, reading optical module information helps understand its real-time operating status, enabling faster troubleshooting of link abnormalities. The following uses the. The Huawei Optical Transceiver SFP-10G-LR is a versatile and high-performance 10G SFP+ module. I face a problem, when i connect a new SFP in H805GPFD board then 0-7 port SFP is working but 8-15 port was not.