Finisar's FTLF8540P4BCL SFP28 optical transceivers are designed for use in 25 Gb/s data rate over multimode fiber. They are compliant to SFF-8472 Rev 12.1 and SFF-8402, and compatible with SFF-8432 and applicable portions of SFF-8431 Rev. 4.1. The optical transceiver is compliant per the RoHS Directive 2011/65/EU.