HP (Hewlett-Packard) D8C24UT#ABA ユーザーズマニュアル

  Removing a Port Cover

The USDT chassis uses an external power supply.

To reduce potential safety issues, only the power supply provided with the computer, a

replacement power supply provided by HP, or a power supply purchased as an accessory from HP
should be used with the computer.

250 Chapter 9   Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis