6-4 IBM Personal Computer User GuideAdding and removing adapter cards for desktopmodelThe system board includes three PCI adapter card connectors (only the low-profilePCI cards will fit).Installing adapter cardsYour computer provides expansion slots for PCI adapter cards only.Follow these steps to install an adapter card:1. Align and insert the adapter card into the adapter card connector.2. Secure the card with the screw to the system chassis3. If your card has cables, connect the cable or cables from the adapter card tothe correct connection on the system board or CD-ROM drive.4. Reinstall all hardware that you removed prior to the installation of the adaptercard.Note:Make sure that you have followed the properprocedure in “Opening the system unit” on page 5-5.This ensures that you discharge the static electricitythat you may have accumulated.