Huawei switches support optical modules of the following encapsulation types: CFP, QSFP+, QSFP28, XFP, SFP, eSFP, and SFP+. All optical modules are hot swappable. eSFP: enhanced small form-factor pluggable. An eSFP. The Huawei Optical Transceiver SFP-10G-LR is a versatile and high-performance 10G SFP+ module. Designed for single-mode fiber, it offers reliable 10km transmission at 1310nm. This product is highly beneficial for data centers and enterprise networks needing robust and long-range connectivity. A switch must use optical or copper modules that have been certified for use on Huawei S switches. They can substitute for each other as long as they have the same optical power.