Dell Precision T7400 User's Guide - Page 194

18 Connect your computer and devices to electrical outlets, and turn them on. Cards CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer. Expansion Card Support NOTE: To upgrade to or downgrade from a dual-graphics configuration (with the graphics riser card), you will need additional parts that can be ordered from Dell. See "Contacting Dell" on page 287. In a configuration without dual graphics and the associated graphics riser card: Your Dell™ computer provides the following slots for PCI and PCI Express cards: • One PCI card slot • One PCI Express x16 card slot • Three PCI Express x8 card slots (wired as x4) • Two PCI-X card slots In a configuration with dual graphics and the associated graphics riser card: Your Dell™ computer provides the following slots for PCI and PCI Express cards: • Two PCI Express x16 card slots (reserved for dual-graphics cards) • One PCI Express x8 card slot (wired as x4) • Two PCI-X card slots 194 Adding and Replacing Parts