IBM THINKPAD S05L-1270-01 - Manual (Page 86)

When replacing: When replacing the slim-type (12.5
mm) hard disk drive, assemble the spacer as
follows:
1. Place the HDD spacer on the hard disk drive.
Note: Make sure that the spacer is oriented
properly.
2. Install the HDD-spacer assembly into the bracket;
then screw.
74 IBM Mobile Systems HMM