Lenovo ThinkCentre A57e Hardware Maintenance Manual page 99

Note: For this procedure, it helps to lay the computer on its side.
2. Disconnect the signal and power cables from the hard disk drive.
3. Press the release tab 1 down, slide the hard drive cage 2 back, and pivot
the hard disk drive outward as shown.
4. Remove the hard disk drive cage from the chassis by simply sliding it
outward.
5. Pull on the blue handle 3 to remove hard disk drive from the drive cage.
6. Remove the failing hard disk drive from the blue plastic bracket from by
flexing the sides of the bracket enough to free it from the hard disk drive.
Chapter 8. Replacing FRUs - Tamdhu Computers
93