800GBASE 2x FR4 OSFP Open Finned Top Transceiver 100% OEM Compatible 800GBase 2x FR4 OSFP Open Finned Top Transceiver (SMF, 1271nm, 1291nm, 1311nm, 1331nm, 2km, Dual Duplex LC, DDM, C-Temp, CMIS 5.0)