This document describes two optical transceiver modules, the EOLS-8512-02-X 1G-BASE SFP+ Transceiver and the EOLP-8596-02-X 10GBASE SFP+ Transceiver. Both modules are designed for multimode fiber communication at 850nm wavelength and comply with laser safety standards. The 10G module can transmit up to 11.3Gbps over 300m of fiber, while the 1G module can transmit up to 1.25Gbps over 550m or 300m of fiber depending on the fiber type. Both modules have a single 3.3V power supply and hot-pluggable duplex LC fiber connectors.