Lenovo ThinkCentre 7258 User Manual page 113

8. To install the new hard disk drive into the blue bracket, flex the bracket and
align the pins 1 through 4 on the bracket with the holes in the hard disk
drive. Do not touch the circuit board 5 on the bottom of the hard disk drive.
9. Slide the new hard disk drive into the hard drive cage until it snaps into
position.
Chapter 8. Replacing FRUs - Tamdhu Computers
107