An eSFP module is an SFP module that supports monitoring of voltage, temperature, bias current, transmit optical power, and receive optical power. They comply with the specifications defined in the multi-source agreement (MSA) and support synchronous optical network (SONET), Gigabit Ethernet (GE), fiber channel, and other communication. The eSFP-GE-SX-MM850 optical module is a Huawei Gigabit multimode optical module with DOM/DDM support, which is packaged in an SFP package with a center wavelength of 850 nm. Therefore, eSFP is also called SFP sometimes. XFP: 10 Gigabit small form-factor. Up to 1. Table 1 shows the Huawei hot switches which support eSFP-GE-SX-MM850.