IBM 8185 - ThinkCentre M50 - 256 MB RAM User Manual page 106

7. Install the drive into the bay and lock it into position.
8. A hard disk drive requires two cables; a power cable that connects to the power
The steps to connect a drive are different depending on the type of drive you are
connecting. Use one of the following procedures for your drive connection.
Connecting the first CD drive or DVD drive
1. Locate the three-connector signal cable that comes with your computer or with
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User Guide
Note: Some drives might require screws to secure the drive into the bay. If this
is the case, align the screw holes, and insert the screws to secure the
drive.
supply and a signal cable that connects to the system board.
v A parallel ATA hard disk drive requires a four-wire power cable.
v A serial ATA hard disk drive requires a five-wire power cable.
the new drive.