This ZyXEL SFP-SX-D compatible SFP transceiver provides 1000Base-SX throughput up to 550m over multi-mode fiber (MMF) at a wavelength of 850nm using a LC connector. It is guaranteed to be 100% compatible with the equivalent ZyXEL 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. Digital optical monitoring (DOM) support is also present to allow access to real-time operating parameters. All of the transceivers are Trade Agreements Act (TAA) compliant.