FTLC1154RDPL QSFP28 Transceiver Modules Coherent FTLC1154RDPL QSFP28 Transceiver Modules are designed for use in 100Gigabit Ethernet links on up to 10km of single-mode fiber (SMF). The modules comply with the QSFP28 MSA, IEEE 802.3ba 100GBASE-LR4, and IEEE 802.3bm CAUI-4. Digital diagnostic functions are available via the I2C interface. This Coherent optical transceiver complies with RoHS 6 Directive 2011/65/EU.