Lenovo ThinkCentre A70 7099 Hardware Maintenance Manual page 112

6. Slide the new optical drive into the drive bay from the front and align the
Figure 23. Installing the optical drive
7. Connect one end of the signal cable to the rear of the new optical drive and the
Figure 24. Connecting a SATA optical drive
8. To complete the replacement, go to "Completing the parts replacement" on
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Hardware Maintenance Manual
screw holes in the new optical drive with the corresponding holes in the drive
bay. Then, install the two screws to secure the new optical drive in place.
other end to an available SATA connector on the system board. See "Locating
parts on the system board" on page 86. Then, locate an available five-wire
power connector and connect it to the rear of the new optical drive.
page 114.