Short eject hooks vs long hooks
The 1-5499913-0: This header uses short eject hooks rather than the long eject hooks found on the sibling 1-5499786-0. The short hooks still latch the cable assembly securely but leave less overhang past the connector body — helpful when board-edge clearance is tight.
The 4-wall shroud and keying slot prevent mis-mating with the cable socket.
