Dell OptiPlex GX280 - Manual (Page 296)

6. Move the first hard drive from the upper bay to the lower bay:
a. Disconnect the power and the hard-drive cables from the back of the first hard drive.
b. Press in the two green rail tabs and pull the first hard drive out of the upper bay.
c. Gently slide the drive into place until you hear a click or feel the drive securely installed.
7. Gently slide the new drive into place until you hear a click or feel the drive securely installed.
1 rail tabs (2)
2 second hard drive in upper bay
3 first hard drive in lower bay
4 hard drive bay
8. Connect a power cable to the drives.
9. Locate an unused serial ATA connector on the system board and attach a drive cable to this connector and to the
second hard drive.
1 power cable
2 hard-drive cables
10. Close the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.