QSFP-DD Receptacle for 200/400 GbE Line Cards
The TE Connectivity 2372133-2 is a QSFP-DD (Double Density) receptacle that doubles the lane count of a standard QSFP cage — 76 positions in the same panel cutout as a QSFP28 or QSFP56 port. It is the board-edge connector that mates with the QSFP-DD plug module, carrying the differential pairs for 200 GbE (8 lanes) or 400 GbE (16 lanes) depending on the host system's SerDes configuration.
Two features on this receptacle address the mechanical challenges of reflowing a 76-position SMT connector. The board guide — a pair of plastic alignment posts — drops into locating holes on the PCB to register the connector before the solder paste wets. Without these, the connector can shift during reflow or lift pads under repeated module swaps.
No official second-source cross-reference exists on record, though the 2227302-3 is the same part in Box packaging if your assembly line can accommodate that format.