100M & 1G SFP is short for the 100M Fast Ethernet (FE) SFP and Gigabit Ethernet (GE) SFP. The FE product portfolio includes 100Base-FX, 100Base-LX, and 100Base-BX SFPs. For instance of the applications, a pair of a 100Base-BX-D and a 100Base-BX-U FE SFP is needed for the single strand deployment. And a 100Base-FX to 100Base-TX SFP transceiver will be needed in the two PHYs' connection. GE SFPs are designed for the Gigabit networks with different types to fit for 1000Base-SX, 1000Base-LX/LH, 1000Base-EX, 1000Base-ZX and 1000Base-T applications. We supply a range of FE and GE SFP transceivers. All these modules can come with digital diagnostics monitoring (DDM) functions and are very cost-effective.