Dell Precision M2400 (Mid 2008) - Manual (Page 59)

2. Place the end that is opposite from the connector on the hard drive into the hard drive bracket, ensuring that the hard drive fits into each corner of the
hard drive bracket.
3. Lower the hard drive into the hard drive bracket.
4. Place the hard drive in the carrier at an angle, aligning the hard drive connector with the connector in the carrier.
5. Slide the hard drive fully into the connector in the carrier.
6. Replace the four M2.5 x 5-mm screws in the hard drive bracket.
1 hard drive 2 blue bumper
3 connector 4 top of blue bumper
1 hard drive 2 connector
3 hard drive bracket 4 corner of hard drive bracket (2)
1 hard drive 2 hard drive carrier
3 connector