Dell Latitude E6400 - Manual (Page 57)

10. Remove the three M2.5 x 5-mm screws on the cover of the hard drive carrier.
11. Lift the cover up at an angle and remove.
12. Remove the four M2.5 x 5 screws from the hard drive bracket.
13. Lift the hard drive up at an angle and disconnect it from the hard drive carrier.
1 M2.5 x 5-mm screw 2 release latch carrier
3 hard drive carrier
1 cover 2 M2.5 x 5-mm screws (3)
3 hard drive carrier
1 hard drive carrier 2 M2.5 x 5-mm screws (4)
3 hard drive 4 hard drive bracket