Dell PowerEdge 4300 Installation Instructions Manual page 11

3. Insert the tab on the clamping bar into the corresponding slot in the bracket cradle
and rotate the clamping bar into place as shown in Figure 8. Ensure that the screw
hole in the clamping bar lines up with the screw hole in the bracket cradle.
Secure the clamping bar to the bracket cradle with a Phillips-head screw.

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SMB Connector and SCSI Cable Strain-Relief Kit Installation Instructions
back of computer
SCSI host adapter
tab
bracket
cradle
SCSI cable
clamping bar
Phillips-head
screw
9