HP XB3000 - Manual (Page 60)

5–10 Maintenance and Service Guide
Removal and Replacement Procedures
10. Connect the hard drive power adapter 1 to the hard drive
power connector on the expansion base rear panel.
11. Connect the power cord to the hard drive power adapter 2,
and then connect the power cord to the wall outlet 3.
Connecting the Hard Drive AC Adapter
✎
For more information on the hard drive, refer to the instructions
that came with the hard drive.
To remove the optional internal hard drive, reverse the installation
procedures.