Lenovo ThinkCentre A70 7099 Hardware Maintenance Manual page 156

5. Hold the hard disk drive from one side of the drive bay assembly and remove
Figure 69. Removing the hard disk drive
6. Connect one end of the signal cable to the rear of the new hard disk drive and
Figure 70. Connecting a SATA hard disk drive
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Hardware Maintenance Manual
the four screws that secure the hard disk drive from the other side. Then,
remove the hard disk drive from the drive bay assembly and disconnect the
signal cable and the power cable from the rear of the hard disk drive to
completely remove it from the chassis.
the other end to an available SATA connector on the system board. See
"Locating parts on the system board" on page 120. Then, locate an available
five-wire power connector and connect it to the rear of the new hard disk
drive.