The MRV C27 SFP-10GDWER-27-I SFP+ transceiver supports up to 40km link lengths over single-mode fiber (SMF) via an LC duplex connector. This transceiver is compliant with SFF-8431 and SFF-8432 MSA standards. Digital diagnostics functions are available via a 2-wire serial interface, as specified in SFF-8472. FSPP-H8-C27-20DMi Small Form Factor Pluggable SFP+ transceivers are compliant with the current SFP+ Multi-Source Agreement (MSA) Specification. GPON System Optical Parameter Detection provides information about optical parameter diagnosis and the GPON port optical parameter threshold. It is mainly used to query the alarm monitoring of GPON optical module. GLsun's DWDM-SFP25G-10-C27-T02 single-mode transceiver is SFP28 module for duplex optical data communications support up to 25. It is with the SFP+ 20-pin connector to allow hot plug capability. More DWDM-SFP25G-10-C27-T02#131021 25G.