Apple Power Macintosh 7200 - Manual (Page 138)

Expansion card power requirements
The combined power consumption of expansion cards must not exceed the
limits specified for your Macintosh model. If you have more than one
expansion card installed, check the information that came with your cards to
make sure that their power consumption is within the limits specified in the
Technical Information booklet.
Card installation
1 Turn off the computer.
Leave the computer plugged in to ground it and protect its components from
static electricity damage.
2 Press the two release buttons under the front panel and slide the cover toward you
approximately two inches.
Locate the two release buttons under the front panel ledge with your fingertips.
138 Appendix B