FIG. 2A is a side view of latch mechanism 116 of PCI cassette 102 in a closed configuration, which is a first predetermined arrangement of components of latch mechanism 116 defined by these components moving relative to themselves. FIG. 2B is another side view of latch mechanism 116 of PCI cassette 102 in the closed configuration. FIG. 2C is a side view of latch mechanism 116 of PCI cassette 102 in an opened configuration, which is a second predetermined arrangement of components of latch mechanism 116 defined by these same components moving relative to themselves in a different manner. In some examples, the closed configuration and the open configuration are the two “extreme” positions that latch mechanism 116 can define, such that all positions that latch mechanism 116 can define (e.g., define relative to housing 116) are between these two positions. FIGS. 2A-2C will now be discussed in conjunction with one another.