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4. Align the cutout on the bottom of the card with the crossbar in the system board connector. Gently rock the card into the connector until it is fully seated. Ensure that the card is fully seated and that its bracket is within the card slot. PCI Cards AGP Card Memory Front Panel Drives Microprocessor Fan Assembly System Board Power Supply Battery CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in your Owner's Manual or Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover. CAUTION: Some network adapters automatically start the computer when they are connected to a network. To guard against electrical shock, be sure to unplug your computer from its electrical outlet before installing any cards. 5. Secure the filler bracket onto the end of the card with the screw you removed in step 3. 6. Connect any cables that should be attached to the card. See the documentation for the card for information about the card's cable connections. 7. Replace the computer cover. 8. Connect your computer and devices to electrical outlets, and turn them on. 9. Install any drivers required for the card as described in the card documentation. AGP Card Your Dell™ computer provides a connector for an AGP card. 1. Follow the procedures in "Before You Begin." 2. Lay the computer on its side so that the system board is on the bottom of the inside of the computer. Removing an AGP Card 1. Press the card lever toward the PCI connector. 2. Pull the card up and out of the card clip. NOTICE: Do not route card cables over or behind the cards. Cables routed over the cards can cause damage to the equipment. NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer. CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in your Owner's Manual or Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover. Installing an AGP Card 1. To add or replace the card, press the card lever toward the PCI connector and gently press the card into the AGP connector until it clicks into place. 2. Release the card lever, ensuring that the tab fits into the notch on the front end of the card. 3. Secure the card with the securing screw. 4. If your computer did not previously have an AGP card installed, move the monitor cable to the VGA connector on the new card. 5. Replace the computer cover. 6. Connect your computer and devices to electrical outlets, and turn them on. Memory You can increase your computer memory by installing memory modules on the system board. For information on the type of memory supported by your computer, see "Memory." NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer. NOTE: DDR 333 memory operates at 320 MHz when used with an 800-MHz front-side bus. DDR Memory Overview DDR memory modules should be installed in pairs of matched memory size. This means that if you purchased your computer with 128 MB of memory installed and you want to add another 128 MB of memory, you should install it in the appropriate connector. If the DDR memory modules are not installed in matched pairs, the computer will continue to operate, but with a slight reduction in performance. The recommended memory configurations are: l Install a pair of matched memory modules in connectors DIMM1 and DIMM2. or l Install a pair of matched memory modules in connectors DIMM1 and DIMM2 and another matched pair in connectors DIMM3 and DIMM4. l Do not install ECC memory modules. l If you install mixed pairs PC2700 (DDR 333-MHz) and PC3200 (DDR 400-MHz) memory, the modules function at the slowest speed installed. l Be sure to install a single memory module in DIMM 1 or the connector closest to the processor before you install modules in the other connectors. Memory Installation Guidelines Installing Memory 1. Follow the procedures in "Before You Begin." 2. Lay the computer on its side so that the system board is on the bottom of the inside of the computer. 3. If necessary, remove a memory module: a. Press out the securing clip at each end of the memory module connector. b. Grasp the module and pull up. NOTE: Always install DDR memory modules in the order indicated on the system board. NOTICE: If you remove your original memory modules from the computer during a memory upgrade, keep them separate from any new modules that you may have, even if you purchased the new modules from Dell. You should install your original memory modules in pairs either in connectors DIMM1 and DIMM2 or connectors DIMM3 and DIMM4. If possible, do not pair an original memory module with a new memory module. Otherwise, your computer may not function at optimal performance. NOTE: Memory purchased from Dell is co...