These instructions are also available in movie format:

• Hard disk drive removal movie - ThinkCentre A50, S50
• Hard disk drive installation movie - ThinkCentre A50, S50

1. Open the cover. See "Cover removal ".
2. Rotate the drive bay upward to gain access to the cable connections. See "Accessing system board components and drives" and "Locating components".
3. If a CD drive is installed, it helps to disconnect the signal cable from the drive to access the hard disk drive cables.
   Note: Blue straps are provided to help when disconnecting cables.
4. Disconnect the signal and power cables from the hard disk drive.
5. Rotate the hard disk drive and bracket to the rear by pulling on the blue handle provided.
   
6. Lift the hard disk drive and bracket up to remove. The drive is removed from the bracket by flexing the bracket.
7. Install the new drive into the bracket and place the bracket into the slot.
8. Rotate the drive and bracket towards the front of the computer and snap it into position.
9. Slide the lock to the locked position.
10. Depending on the type of drive you are installing, go to "Connecting a serial ATA hard disk drive" or "Connecting an IDE drive".
    Note: Do not forget to reconnect the CD drive signal cable if it was disconnected.

What to do next

• To work with another option, go to the appropriate section.
• To complete the installation, go to "Cover installation and connecting the cables".