4.Use one of your hands to hold up the subassembly or have someone do it for you. With your other hand, grasp the hard disk drive ribbon cable that you tucked beneath the subassembly. Pull the cable under the subassembly all the way to its left side.
5.Carefully lower the front of the subassembly onto the computer, as shown below.
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B - 2 0 Installing and Removing Disk Drives