The TE Connectivity 583718-9 is a 44-position card edge housing from the TWIN LEAF series, designed to accept a dual-sided PCB edge card. The housing is panel-mounted via a top-mount flange with an unthreaded 0.128" (3.25mm) diameter opening — you supply the mounting hardware. The card thickness range is 0.055" to 0.070" (1.40mm to 1.78mm), so verify your PCB edge thickness against that window before committing to the BOM line.
Mounting and Card Fit
Panel mount with a top-mount flange, unthreaded opening 0.128" (3.25mm) diameter. The flange feature means the housing bolts to a panel cutout rather than soldering to a board — typical for power supplies, backplane card cages, or chassis-mounted edge card interfaces where the connector is fixed and the card inserts into it. The card thickness acceptance of 0.055" to 0.070" (1.40mm to 1.78mm) covers standard 1.6mm PCBs on the upper end and thinner flex-rigid cards on the lower end.