If you eject the computer manually while it is turned on, the computer turns itself off. You will lose any information you did not save.

When the dock is locked, you can’t use the square hole.

Installing a NuBus card

Installing a NuBus card in the Duo Dock is a technically challenging procedure. We recommend that you attempt it only if you are comfortable working with electronic equipment. You should read all of the following instructions before you begin. If the procedure sounds like something you don’t want to do yourself, any authorized Apple service provider can install a NuBus card for you.

Getting ready

You need the Duo Dock, a NuBus card, and a flat-blade screwdriver.

vIf your system is already set up: Turn off, disconnect, and remove all equipment attached to the dock, but do not unplug the power cord that connects the dock to an electrical outlet or power strip. v

228 Chapter 13: Building a PowerBook Duo System

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Apple Duo 270C manual Installing a NuBus card, Getting ready, When the dock is locked, you can’t use the square hole