Dell OptiPlex GX280 - Manual (Page 339)

1 drive
2 securing tabs (4)
3 drive bracket
5. 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 on the blue tabs on each side of the drive and slide the first hard drive up and out of the upper bay.
c. Gently slide the first hard drive into place until you hear a click or feel the drive securely installed.
6. Gently slide the new hard drive into the upper bay. Apply pressure until you hear a click or feel the drive securely
installed.
7. Connect the power cable to the drives.