This Ciena XCVR-A40Y31 compatible SFP transceiver provides 1000Base-LH throughput up to 40km over FALSE at a wavelength of 1310nm using a LC connector. It is guaranteed to be 100% compatible with the equivalent Ciena transceiver. This easy to install, hot swappable transceiver has been programmed, uniquely serialized and data-traffic and application tested to ensure that it will initialize and perform identically. It is built to meet or exceed the specifications of Ciena, as well as to comply with MSA (Multi-Source Agreement) standards to ensure seamless network integration. All of our transceivers are Trade Agreements Act (TAA) compliant.