Learn about Apple and non-Apple DVI adapters.
Using a DVI (digital video interface) adapter, you can connect an external display to a Mac with a DVI monitor port, such as the PowerBook G4 (DVI).
A variety of Apple DVI adapters are available to use with your computer and monitor. You can buy them from the Apple Store (http://www.apple.com/store), or your Apple reseller. To be sure you have the right adapter, see technical document 33001, "Monitor and Display Adapter Table".
Other companies also make DVI adapters. Some non-Apple adapters may not work exactly the same way the Apple adapters do. For example with a non-Apple adapter, when you disconnect your monitor while the computer is turned on, the Mac OS may not be able to tell you've disconnected the monitor until you put the computer to sleep and wake it up again, or until you select "Detect Displays" from the Displays pane of System Preferences.