Complete 800G optical transceiver buying guide: OSFP vs QSFP112 form factors, SR8/2xDR4/2xFR4/2xLR4 reach selection, finned vs flat top thermal options, plus FAQ. By Topnet System engineers, ISO certified since 2008. http://www.topnetsystem.com/how-to-choose-the-right-800g-optical-transceiver-osfp-vs-qsfp112-guide-nv651-1.html en