I have the MA-SFP-1GB-SX in some of my switches and the port can be set to Auto or '1 Gbps Forced'. I suppose, conceptually, if the other side is less than 1G it could negotiate lower but I've never seen this since my far side is the same SFP so it is equally 1G capable.
Adam R MS | CISSP, CISM, VCP, MCITP, CCNP, ITILv3, CMNO
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