FIG. 3A is a side view of latch mechanism 116 in the closed configuration showing elastic deformation (exaggerated for clarity) of primary spring 118 and secondary spring 138, which are both comprised of a metallic material, such as a hardened and tempered 1095 spring steel with a thickness of 1.2 millimeters (mm). Latch 122 itself includes secondary spring 138 between mounting portion 140 and the main body 142 of latch 122. When latch mechanism is in the closed configuration, secondary spring 138 also elastically deforms. Thereby, both primary spring 118 and secondary spring 138 exert force on PCI cassette 102 towards CSCB 100, which ensures that the connection between input connector 108 and output connector 114 (both shown in FIG. 1A) is maintained. In addition, any twisting movement of latch 122 under load is prevented by being sandwiched between housing 110 and brace 124.