First, the pluggable module 700 is inserted into the bay 600, as shown by the movement “d” in FIGS. 11A and 12A, with the lever tab 657 rotated upwards as shown in FIG. 13A.
After the module 700 is fully received in the bay 600 but prior to actuating the electrical engagement lever 734 (see FIGS. 12B and 13A), the module board is 721 is a distance d8 from the system board 2 such that the electrical connector 724 on a bottom side of the module board 721 is disconnected from the electrical connector 602 (see FIG. 12B). In this state, the cold plate 630 is a non-zero distance d5 from the thermal interface 723 (see FIG. 12B). In addition, in this state the release tabs 738 of the pluggable module 700 are located in a non-engaged position in which they interfere with the curtain tabs 658 on the bottom side of the lever tab 657 (see FIG. 13A). This interference prevents the user from lowering the lever tab 657 and actuating the cold plate engagement mechanism 650.
