Part number dissection
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2343988QSFP-DD, 4-port, 1x4 configuration, ganged cage, high-speed I/O connector with an included heat sink, manufactured by TE Connectivity.
-2Heat sink height and style, with '-2' corresponding to a SAN heat sink style with a height of 6.5 mm and an anodized black finish.
Specifications
Base codeQSFP-DD, 4-port, 1x4 configuration, ganged cage, high-speed I/O connector with an included heat sink, manufactured by TE Connectivity.
Finish / variantHeat sink height and style, with '-2' corresponding to a SAN heat sink style with a height of 6.5 mm and an anodized black finish.
Acceptable alternates
2343988-1Different heat sink style (PCI) and height (4.2 mm) for the same QSFP-DD 1x4 cage.
2343988-3Different heat sink style (NET) for the same QSFP-DD 1x4 cage.
Confirm acceptability against your drawing before ordering.