In this article, we will focus on the most common 40G QSFP+ optical modules to help you deploy your network efficiently! Typically, 40G optical modules with a wavelength of 850nm are used with multimode fiber optic patch cords for short distance data transmission. FS 40G QSFP+ optical transceiver module solutions offer a full range of QSFP+ modules from 150m to 80km reach, and used for high-density switching, routing and data center applications. It operates at 850nm, transmits data over four parallel 10Gbps lanes, and typically supports distances up to 100m on OM3 and 150m on OM4 fiber. Now on the market a variety of 40G optical modules, such as, QSFP + package form of 40GBASE-SR4/LR4/CR4/CSR optical modules, etc., in the selection, I believe you must have observed that the appearance of these 40G optical modules are very similar, such as the 40GBASE-SR and 40GBASE-CSR4 these two. With four mutually independent channels for transmitting and receiving optical signals, 40G optical modules are able to provide high-density and low-power 40G Ethernet connectivity transmission applications for data centers, high-performance computing networks, enterprise core and distribution. In data centers and enterprises, 40G QSFP+ series optical transceiver modules are generally used to build 40G network connectivity solutions. The modules most commonly used in 40G solutions include 40GBASE-LR4 QSFP+, 40GBASE-SR4 QSFP+, and 40G LR4 PSM. X-linkit's comprehensive portfolio of 40G optical modules delivers exactly.