Dell DR4300e Owner's Manual page 165

CAUTION: To prevent damage to the I/O cable, you must release the locking tab before removing
or installing the I/O cable from the connector on the hard drive backplane.
Steps
1. Rotate the locking tab on the I/O cable connector clockwise 90 degrees to release the lock.
2. Disconnect the I/O cable from the backplane.
3. Remove the screws securing the I/O panel to the chassis.
4. Pull out the I/O panel cable through the channel on the chassis.
Figure 84. Removing the I/O panel
1. I/O panel cable
3. screw (3)
5. chassis
Next steps
1. Replace the I/O panel.
2. Follow the procedure listed in the After working inside your system section.
Related Links
Safety instructions
Before working inside your system
Removing the hard drive backplane
Installing the I/O panel
After working inside your system
2. hard drive backplane
4. I/O panel
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