Supermicro SuperServer E403-9D-16C-IP User Manual page 29

Enabling the Top Cover Lock Function
The chassis includes a lock plate that allows the top cover to be locked.
1. Pull the lock plate into a vertical position.
2. Close the fan cover. Make sure the lock plate fits through the slot on the cover.
3. Install two screws on the fan cover.
4. Install a lock on the lock plate.
Figure 3-5. Top Cover Lock Function Enabled
Chapter 3: Maintenance and Component Installation
Figure 3-4. Pull the Lock Plate Up
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