The Alveo UL3422 card hosts two 8-lane small form-factor pluggable (QSFP-DD) connectors that are housed within a ganged 1x2 QSFP-DD cage assembly with heatsink. It can be populated with QSFP or QSFP-DD direct attach copper or optical modules supporting up to 7W. The QSFP-DD can connect interfaces up to 100G using optical modules or cables. A 161.1328125 MHz clock is provided to the QSFP-DD interface such that different Ethernet IP cores can be enabled.