25G SFP28 capable of rate-adaption down to 1G?

[Bill Woodcock]

Hey, does anyone know of an SFP28 capable of rate-adapting down from 25G on the 
cage side down to 1G on the line side?  Can be copper or fiber on the line 
side, I don’t care, my interest is in the chip inside.

Thanks,

                                -Bill

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