VIPowER Portable 3.5 in. External Enclosure VP-9258V - Manual (Page 13)

10. Replace the upper case.
Note
Ensure that the groove in the upper case aligns with the slot in the base unit.
11. Slide the upper case forward ensuring that it abuts the rear face of the front
panel.
12. Finally, secure the upper case with the two retaining screws.
VP-9258V Installation Guide 11