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WH294T459D0S02 is a 1x4 SFP+ Cage—four ports in a single row.It is a cage only, so each port needs its own SFP+ connector; the datasheet shows the recommended connector layout for all four positions.
The cage is 0.25 mm C7701 copper alloy with a SUS304 stainless steel back spring.Heat dissipation holes run across the top. Operating range is -40 °C to +85 °C, storage -55 °C to +105 °C.
Yes. The datasheet provides separate PCB layouts and bezel designs for single-sided and belly-to-belly mounting.The bezel cutout is 58.20 mm wide by 10.40 mm high, and belly-to-belly openings sit 12.19 mm apart.