CSR4 Optical Module
CSR4 is a 40GBASE QSFP+ that uses four parallel optical lanes to transmit data over multimode fiber, enabling efficient high-speed communication within short to medium distances. Because the QSFP-40G-SR4-S does not support 4x10G breakout connectivity, see QSFP-40G-SR4 or. What is QSFP 40G CSR4? The QSFP 40G CSR4 (Central Short Reach 4-lane) is an enhanced version of SR4 designed for extended MMF reach.
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