Finisars FTLX8571D3BCV 1G/10G Dual-Rate SFP+ transceivers are designed for use in 1-Gigabit and 10-Gigabit Ethernet links over multimode fiber. They are compliant with SFF-8431, IEEE 802.3-2005 10GBASE-SR/SW and 1000BASE-SX. Digital diagnostics functions are available via a 2-wire serial interface, as specified in SFF-8472. The FTLX8571D3BCV is a "limiting module", i.e., it employs a limiting receiver. Host board designers using an EDC PHY IC should follow the IC manufacturers recommended settings for interoperability with an SFP+ limiting module. his product is for applications specifically designed for 10G SFP+ ports and 1G/10GSFP+ ports and not native 1G SFP ports. The transceiver is RoHS compliant and lead free per Directive 2011/65/EU, and Finisar Application Note AN-2038.