Dell DL4300 Owner's Manual page 142

Steps
1. If a hard drive blank is installed in the hard drive slot, remove it.
2. Install a hard drive in the hard drive carrier. For more information, see the Installing a hot swappable
hard drive into a hot swappable hard drive carrier section.
3. Press the release button on the front of the hard drive carrier and open the hard drive carrier handle.
4. Insert the hard drive carrier into the hard drive slot until the carrier connects with the backplane.
5. Close the hard drive carrier handle to lock the hard drive in place.
Next steps
Install the optional front bezel.
Figure 76. Installing a hot swappable hard drive
1. release button
3. hard drive or SSD carrier handle
Figure 77. Installing a 1.8-inch hot swappable uSATA SSD
1. release button
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2. hard drive or SSD carrier
2. SSD carrier