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WH81177004331 is a QSFP-DD 1x4 Cage with a Heat Sink on every port.The assembly consists of the cage, EMI springs, heat sinks and clips; the connectors are sourced separately.
The cage, EMI springs and clips are stainless steel, and the heat sinks are natural-anodized aluminum alloy.Overall dimensions are 76.25 mm wide, 71.48 mm deep and 13.40 mm tall, rising to 14.4 mm max with modules plugged in.
It is Press-Fit, needing a 1.57 mm minimum board and 29 ø1.05 mm holes single-sided, or 2.30 mm and 53 holes belly to belly.The recommended bezel cutout is 77.00 mm × 10.15 mm.