9. Insert the DIMM into the connector by aligning the edges of the DIMM with theslots at the ends of the DIMM connector.10. Firmly press the DIMM straight down into the connector by applying pressureon both ends of the DIMM simultaneously. The retaining clips snap into thelocked position when the DIMM is firmly seated in the connector.Note: If there is a gap between the DIMM and the retaining clips, the DIMMhas not been correctly inserted; open the retaining clips, remove the DIMM,and then reinsert it.11. Replace the system-board tray (see “Replacing the MAX5 system-board tray”on page 81). Grasp the system-board tray on both sides (near the stop-tabs)and align the system-board tray with the chassis.12. Slide the system-board tray forward until the tabs on the bottom of the handlestouch the chassis; then, close the handles and press firmly on the releaselatches to snap them into the locked position.If you have other devices to install or remove, do so now. Otherwise, go to“Completing the MAX5 installation” on page 81.Installing a MAX5 hot-swap power supplyThe following notes describe the type of power supply that the MAX5 expansionmodule supports and other information that you must consider when you install apower supply:v The IBM MAX5 for System x memory expansion module comes with one675-watt hot-swap 12-volt output power supply. The input voltage is 110 V ac or220 V ac auto-sensing. Two power supplies must be installed for redundancysupport.Note: You cannot mix 110 V ac and 220 V ac power supplies in the MAX5, it isnot supported.v These power supplies are designed for parallel operation. In the event of apower-supply failure, the redundant power supply continues to power the system.The memory expansion module supports a maximum of two power supplies.Statement 5:Chapter 2. Installing optional devices 79
