IBM 8185 - ThinkCentre M50 - 256 MB RAM User Manual page 105

4. Remove the metal shield from the drive bay by inserting a flat-blade
screwdriver into one of the slots and gently prying it loose.
5. Make sure the drive that you are installing is set correctly as either a master or
a slave device.
Note: A serial ATA hard disk drive does not need to be set as either a master
or a slave device.
v If it is the first CD drive or DVD drive, set it as a master device.
v If it is an additional CD drive or DVD drive, set it as a slave device.
v If it is an additional parallel ATA hard disk drive, set it as a slave device.
Refer to the documentation that comes with your drive for master/slave
jumper information.
6. You might have to remove the bezel to install some drives. Remove the front
bezel by pushing in on the blue plastic tab at the rear of the computer.
Chapter 4. Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433
89