This Cisco QSFP-40G-SR4 compatible QSFP+ transceiver provides 40 G Base-SR throughput up to 150m over multi-mode Fibre (MMF) at a wavelength of 850nm using a MPO connector. Digital optical monitoring (DOM) support is also present to allow access to real-time operating parameters. Our transceiver is guaranteed to be 100% compatible with the equivalent Cisco transceiver. This easy to install, hot swappable transceiver has been programmed, uniquely serialized & data-traffic & application tested to ensure that it will initialize & perform identically. It is built to meet or exceed the specifications of Cisco, as well as to comply with multi-source agreement (MSA) standards to ensure seamless network integration.