Dell Precision Workstation 340 Service Manual page 20

8. Attach the bracket rails to the new hard drive by aligning the four screw holes of the drive and bracket and then inserting and tightening the screws
that came with your upgrade kit.
9. Reinstall the hard-drive bracket by gently sliding the bracket into place until you hear it securely click.
Installing a Hard Drive
NOTICE: To avoid possible damage to the computer, you must match the colored stripe on the hard-drive data cable with pin 1 on the drive's data
cable connector and with the IDE drive data connector (labeled IDE_PRI) on the system board.
10. Connect a power cable to the power cable connector on the drive, and connect the hard-drive data cable to the hard drive.
Check all connectors to be certain that they are properly cabled and firmly seated.
Hard-Drive Cable Attachment
1 hard-drive data cable 4 hard-drive data cable connector