Dell Precision WorkStation 420 Service Manual page 11

Hard-Disk Drive Bracket Removal
To remove the hard-disk drive bracket, perform the following steps.
NOTICE: If you are removing a hard-disk drive that contains data you want to keep, be sure you have a backup of your files before
you begin this procedure.
CAUTION: Before you remove the computer cover, see
1. Remove the computer cover.
2. Disconnect the DC power cable and data cable from the drive.
3. Remove the screw holding the drive bracket to the drive bay.
4. Rotate the drive bracket upward to disengage it from the latch on the drive bay, slide it to the left, and lift it out of the chassis (see Figure 16).
Figure 16. Hard-Disk Drive Bracket Removal
Hard-Disk Drive Removal
To remove a hard-disk drive from the drive bracket, perform the following steps.
1 Metal tab
2 Drive bracket
3 Screws (4)
"Precautionary Measures."
1 Screw
2 Hooks (3)
3 Drive bracket
4 Latch on drive bay