Dell PowerEdge SC1420 - Manual (Page 48)

6. If you are removing the card permanently, install a filler bracket in the empty card-slot opening.
7. Lower the retention arm and press it into place, securing the remaining card(s) in the system. See Figure 6 -4 .
8. Close the system. See " Closing the System " in "Troubleshooting Your System."
9. Reconnect the system to the electrical outlet, and turn on the system and attached peripherals.
10. Remove the card's device driver from the operating system.
System Memory
See Figure A -3 for the location of the six memory module connectors. The six memory module connectors on the system board can accommodate from 256 MB
to 12 GB of 400-MHz registered ECC DDR II memory modules.
Memory Module Upgrade Kits
The system is upgradable to 12 GB by installing combinations of 256-MB, 512-MB, 1-GB, or 2-GB 400-MHz registered ECC DDR II memory modules. You can
purchase memory upgrade kits from Dell.
Memory Module Installation Guidelines
l If only one memory module is installed, it must be installed in connector DIMM_1.
l If only one memory module is installed in connector DIMM_1, its capacity must be 256 MB.
l If more than one memory module is installed, the memory modules should be installed in pairs of matched memory size, speed, and technology. See
Figure 6 -5 to determine the module's capacity. Memory modules marked with a 1R are single ranked and ones marked with a 2R are dual ranked.
l Memory modules should be installed in order, connectors DIMM_1 and DIMM_2, DIMM_3 and DIMM_4, and then DIMM_5 and DIMM_6.
l Dual-ranked memory modules should be installed first regardless of capacity.
l Install memory modules with the largest capacity in connector DIMM_1 and the least capacity in connector DIMM_6.
l Dual-ranked memory modules are not supported in DIMM_5 and DIMM_6.
l If you have installed dual-ranked memory modules in DIMM_1, DIMM_2, DIMM_3, and DIMM_4, you cannot install memory modules in DIMM_5 and
DIMM_6.
Figure 6-5. Determining the Memory Module's Capacity and Rank
NOTE: Filler brackets must be installed over empty expansion card slots to maintain FCC certification of the system. The brackets also keep dust
and dirt out of the system and aid in proper cooling and airflow inside the system.
NOTE: Dual-ranked memory modules with less capacity take precedence over single-ranked memory modules with greater capacity.
NOTICE: If you remove your original memory modules from the system during a memory upgrade, keep them separate from any new memory modules
that you may have, even if you purchased the new memory modules from Dell. Use only registered ECC DDR II memory modules.