According to the standard established by IEEE and MSA, there are two main packages of 40G optical transceiver: QSFP+ and CFP, and the most commonly used is QSFP+. Therefore CFP is relatively rare and price is more expensive. 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. Each channel can: This quad-channel design gives data center switches and routers a higher port density. QSFP+ (Quad Small Form-Factor Pluggable Plus) is the workhorse optical form factor for 40 GbE compact, hot-pluggable, and built around 4×10 Gb/s electrical lanes per direction. Forty-gigabit ports used to be a common spine or aggregation choice, usually built from four 10G lanes (QSFP + SR4). Today, many organizations skip 40G in new designs because 100G built from 4×25G or native. QSFP 40G 80km transceivers are designed for long-distance 40Gbps links where standard LR4 (10km) or ER4 (40km) optics cannot meet reach requirements. They are typically deployed in metro networks, inter-campus backbones, and data center interconnect (DCI) scenarios that require up to 80km. HoweVision 40G QSFP+ Optical Transceivers comply with QSFP+ MSA, and provides 40Gigabit Ethernet connectivity for high-speed computing networks, data center, service provider applications. It offers a variety options to meets the different requirement: SQP-40G-SR4 QSFP+ 40G SR4 module supports.