The Alveo U280 accelerator cards host two 100G interfaces, each comprised of a 4-lane QSFP28 connector. The QSFP case temperature must be less than 85°C for class 3 optical modules (< 2.5W), and less than 70°C for class 4 optical modules (< 3.5W). The user needs to provide sufficient airflow and ambient temperature to ensure the optical module remains within the manufacturer's specification. For available platforms, see Alveo Data Center Accelerator Card Platforms User Guide (UG1120). Each connector is housed within a single QSFP cage assembly located at the I/O bracket.