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One of the key benefits of the Finisar 4.25 Gb/s transceivers is the ability to have exceptional performance at 1x, 2x, and 4x Fibre Channel, and in the same part also have exceptional performance at Gigabit Ethernet. This capability is due in part to the device’s rate select feature.
In defining rate select in this part, Finisar has followed all industry standards including the SFP MSA and the current SFF-8079 draft proposed by the T11 committee. In addition, the rate select definition used by Finisar allows backwards compatibility with legacy 2 Gb/s transceivers. The following document outlines Finisar’s rate select scheme and the advantages it offers.