SE1731 - TL is used for testing OSFP-XD transceiver ports under board level tests, by substituting a full-featured OSFP-XD transceiver with the SE1731 - TL. The SE1731 - TL covers all OSFP-XD power classes. The SE1731 - TL is packaged in a standard MSA housing compatible with all OSFP-XD ports. It provides an economical way to exercise OSFP-XD ports during R&D validation, production testing, and field testing. It follows the CMIS standard.