Dell Dimension XPS 50 Reference Manual page 28

2-2 Dell Dimension XPS Txxx and Txxxr Systems Reference and Troubleshooting Guide
Keep a static-sensitive component in its antistatic packing material until you are ready
to install the component in the computer. Just before unwrapping the antistatic pack-
aging, discharge static electricity from your body.
Make sure you have adequate lighting and a clean work space. If you temporarily dis-
connect cables or remove expansion cards, note the position of the connectors and
slots so that you can reassemble the system correctly. Also note the extra connectors
available for upgrades.
NOTE: This system uses two types of chassis. One chassis uses a cover with an inte-
grated support beam. In the other chassis, the support beam is attached to the
chassis and must be removed to access internal components.
To remove the computer cover and support beam from a desktop or mini tower sys-
tem, perform the following steps:
1. Observe the "Caution for Your Personal Safety and Protection of Your Equipment"
found earlier in this chapter. Also, observe the safety instructions at the front of this
guide.
2. If you are working on a mini tower system, lay the computer on its right side with
the chassis foot off the edge of the work surface to allow the computer to lay flat.
3. Loosen the cover-mounting thumbscrew shown in Figure 2-1 that secures the
cover to the back of the computer.
NOTE: The thumbscrew is captive and stays in the cover when loosened.