Dell Dimension 9200 - Manual (Page 14)

5. Locate the three hinge tabs on the bottom edge of the computer.
6. Grip the sides of the computer cover and pivot the cover up.
7. Lift the cover away and set it aside in a secure location.
Inside View of Your Computer
System Board Components
1 cover release latch 2 computer cover 3 hinge tabs (3)
CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide.
1 power supply 2 system board 3 hard drive
4 card fan 5 media card reader (optional) 6 floppy drive (optional)
7 CD or DVD drive 8 processor fan 9 processor shroud and processor