b. Open the retaining clip on each end of the DIMM slot. Turn the DIMM sothat the pins align correctly with the connector.Note: To avoid breaking the retaining clips or damaging the DIMMconnectors, open and close the clips gently.c. Insert the DIMM into the connector by aligning the DIMM edges with theslots at each end of the DIMM connector. Firmly press the DIMM straightdown into the connector by applying pressure on both ends of the DIMMsimultaneously. Be sure that the retaining clips snap into the lockedposition when the DIMM is firmly seated in the connector.d. If a gap exists between the DIMM and the retaining clips, the DIMM hasnot been correctly installed. In this case, open the retaining clips andremove the DIMM; then, reinsert the DIMM.e. If you removed the AGP adapter, reinstall it now. See “Installing anadapter” on page 48 for details.8. If you have other options to install or remove, do so now.9. Replace the support bracket assembly and reconnect the fan cable to theconnector (SYSFA3) on the system board. See “Removing the support bracketassembly” on page 46 for installation instructions.10. Reinstall the side cover. See “Installing the cover” on page 58 for details.11. Reconnect the external cables and power cords; then, turn on the attacheddevices and the computer.If you want to remove a DIMM, reverse the previous steps.Installing a security U-boltTo help prevent hardware theft, you can add a security U-bolt and cable to yourcomputer. After you add the security cable, make sure that it does not interferewith other cables that are connected to the computer.Before you begin:v Obtain the following items:– A flat-blade screwdriver– An adjustable wrench– A 199 mm (3/4 in.) U-bolt or wire rope (similar to National ManufacturingNo. 3230, Stock No. 176-735)– Threaded nuts that fit the U-Bolt– A security cable– A lock, such as a combination lock or padlock.v Read the information in “Handling static-sensitive devices” on page 38, and“Safety information” on page 39.Chapter 5. Installing options 57
