Apple PowerBook (2400c) User Manual download pdf (Page 64)

Adding memory to your computer

You can increase your computer’s memory by adding a RAM expansion card.

You can find out how much memory your computer has by choosing About

This Computer from the Apple (K) menu in the Finder.

You can purchase memory upgrades from Apple-authorized dealers. An

Apple-authorized dealer must install any memory upgrades you purchase.

Your Macintosh PowerBook also supports virtual memory, a feature that

makes use of hard disk space to provide additional RAM. Your computer

comes with virtual memory turned on. For information on using virtual

memory, see the “Memory” topic area of Mac OS Guide, available in the

Guide (h) menu.

Using infrared file transfer

Your Macintosh PowerBook has built-in infrared (IR) communication

that can send and receive files. You can exchange information with another

PowerBook or other device that has IR capability or with a desktop

computer that’s using an external IR module. In addition, you can use IR

communication to make a wireless connection to a network, by means of

a specialized device, such as Hewlett-Packard’s NetBeam IR, that uses

PowerBook-compatible software.

To transfer files, your computer and the other IR device must be within range

of each other, with the IR windows facing. Your computer must be within 3

feet of the network IR station to make a network connection using an Infrared

Data Association (IRDA)–compliant transfer rate of 1 megabit per second.

You use the Infrared control panel to select the method of IR communication

you want to use and to see a list of other IR-capable devices. For instructions

on IR file transfer, see “How do I send a file using IR technology?” in the

“Organizing Your Files” topic area of Mac OS Guide.

Chapter 3

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Apple PowerBook (2400c) User Manual Page 64