Dell PowerEdge R840 EMC Installation and Service Manual - Page 81

CAUTION: Do not apply pressure at the center of the memory module; apply pressure at both ends of the memory module evenly. NOTE: The memory module socket has an alignment key that enables you to install the memory module in the socket in only one orientation. 4. Press the memory module with your thumbs until the socket levers firmly click into place. Figure 45. Installing a memory module Next steps 1. Install the applicable air shroud: • GPU air shroud OR • Non-GPU air shroud 2. Follow the procedure listed in After working inside your system on page 45. 3. Verify if the memory module has been installed properly, by pressing F2 and navigating to System Setup Main Menu > System BIOS > Memory Settings. In the Memory Settings screen, the System Memory Size must reflect the updated capacity of the installed memory. If the value is incorrect, one or more of the memory modules may not be installed properly. Ensure that the memory module is firmly seated in the memory module socket. Run the system memory test in system diagnostics. Expansion cards and expansion card risers An expansion card in the system is an add-on card that can be installed into an expansion slot on the system board or a slot on a riser to add enhanced functionality to the system through the expansion bus. NOTE: A System Event Log (SEL) event is logged if an expansion card riser is not supported or missing. It does not prevent your system from turning on. However, if a F1/F2 pause occurs, an error message is displayed. Table 16. Expansion card riser specifications PCIe slot Riser Processor connection 1 X8 PCIe Riser 1 Processor 1 2 X16 PCIe Riser 1 Processor 1 X8 PCIe Riser 1 Processor 1 3 Located on the Processor 1 system board Height Full height Full height Full height Low profile Length Half length Full length Half length Half length Slot width x8 x16 x8 x16 Installing and removing system components 81