HP Compaq dx6120 ST Hardware Reference Manual page 42

Hardware Upgrades
✎
2-32
4. Connect the power and data cables to the rear of the drive. If
installing a second hard drive, connect the other end of the data
cable to the system board connector labeled P61 SATA 1.
5. Remove the drive bezel by pushing the two tabs on one side of the
larger front bezel inward 1 and rotating the drive bezel away
from the larger front bezel 2.
The type of bezel will vary depending on the computer configuration.
Removing the Drive Bezel (Diskette Drive Bezel shown)
www.hp.com Hardware Reference Guide