5-10 IBM Personal Computer User GuideSwitching power supply. The system comes with a switching powersupply.Expansion slots. On the system boards are three expansion slots forinstallation of the adapter cards that conform to Peripheral ComponentInterconnect (PCI) specifications. These cards are commonly referred toas PCI adapter cards (only the low-profile PCI cards will fit).System board.Bay 3. This drive can accommodate a 5.25-inch half-high drive such as ahard disk, tape, or CD-ROM. In many models, this bay holds a factory-installed CD-ROM drive or DVD-ROM drive.Bay 2. This drive can accommodate a 3.5-inch device. In many models,this bay holds a factory-installed hard disk drive.Bay 1. This drive bay can accommodate a 3.5-inch slim IDE hard disk. Inmany models, this bay holds a factory-installed diskette drive.123456
