25Gb SFP28 optical transceiver module, 850nm wavelength, SR (short-range multimode). Brand: Arista. Designed for high-speed fiber optic connections in enterprise switch, router, and server HBA ports. Compatible with major network equipment brands including Cisco, Arista, Juniper, and Dell. 3rd party / compatible module — please verify MSA compliance with your switch before ordering. Ideal for data center inter-switch links, server-to-switch uplinks, and storage network (SAN) connections. Contact us to confirm compatibility with your specific switch model and firmware version.