OSFP (Octal Small Form Factor Pluggable) is a pluggable optical transceiver interface standard that supports eight electrical lanes (Tx/Rx) per module. Each lane can operate up to 100G PAM4, allowing total bandwidths of 400G or 800G depending on configuration. The OSFP MSA is proud to introduce OSFP1600 and OSFP-XD to the industry. This whitepaper highlights the key aspects and features of each solution with the expectation that both solutions will have a place in future data center applications. Each module needs a small but precise set of support ICs — multi-voltage conversion, hot-plug load switching, rail supervision, and signal level shifting. The Optical Small Form Factor Pluggable (OSFP) transceiver is a next-generation transceiver module rapidly gaining traction in high-speed networking. It is designed to accommodate future networks' increasing data rate demands, specifically the 400G Ethernet. The OSFP transceiver is not just about. This specification defines the electrical connectors, electrical signals and power supplies, mechanical and thermal requirements of the OSFP Module, connector and cage systems. It connects to host devices through standardized interfaces, defining the layout for power, control, and high-speed signal channels to ensure device compatibility.