Gently swing the top part of the chassis up so that it rests on the support foot.

Support arm

Be sure that the support arm engages this hole on the floor of the bottom chassis so that the top chassis is locked in place.

What you do next depends on whether you are installing a PC Serial and Parallel Card.

mIf you want to install a PC Serial and Parallel Card, you need to connect the peripheral flex cable to your PC Compatibility Card now. See the PC Serial and Parallel Card manual for instructions. Then return to this manual and go on to the next section, “Inserting the PC Compatibility Card.”

mIf you don’t want to install a PC Serial and Parallel Card, go on to the next section.

Reinstalling the PC Compatibility Card in Your Power Macintosh 7300 Computer

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Apple 4400, 7300 manual Support arm