Cisco Compatible, C49 DWDM-SFP25G-38.19 Optical Transceiver Module 25G DWDM SFP28 100GHz 1538.19nm 10km DOM LC SMF GLsun's DWDM-SFP25G-10-C49-T02 single-mode transceiver is SFP28 module for duplex optical data communications support up to 25.78Gb/s. It is with the SFP+ 20-pin connector to allow hot plug capability. Digital diagnostic functions are available via an I C. It has built-in clock and data recovery (CDR). This module provides 25GBase-DWDM throughput up to 10km over single-mode fiber (SMF) using a wavelength of 1538.19nm via duplex LC connector. https://www.glsunmall.com/product/dwdm-sfp25g-38-19-optical-transceiver-module.html