Systemcapacity(in GB)DIMMsize (inGB)Numberof DIMMs DIMM rank, organization, andfrequency DIMM slot population768 32 24 2R, x4, 1866 MT/s A1, A2, A3, A4, A5, A6, A7, A8, A9,A10, A11, A12, B1, B2, B3, B4, B5,B6, B7, B8, B9, B10, B11, B1264 16 4R, x4, 2400 MT/s4R, x4, 2133 MT/sA1, A2, A3, A4, A5, A6, A7, A8, A9,A10, A11, A12, B1, B2, B3, B4, B5,B61024 64 16 4R, x4, 2133 MT/s A1, A2, A3, A4, A5, A6, A7, A8, A9,A10, A11, A12, B1, B2, B3, B4, B5,B61536 64 24 4R, x4, 1866 MT/s4R, x4, 2133 MT/sA1, A2, A3, A4, A5, A6, A7, A8, A9,A10, A11, A12, B1, B2, B3, B4, B5,B6, B7, B8, B9, B10, B11, B12* 16 GB DIMMs must be installed in slots numbered A1, A2, A3, A4, B1, B2, B3, and B4 and 8 GB DIMMsmust be installed in slots A5, A6, B5, and B6.Removing memory modulesPrerequisitesCAUTION: Many repairs may only be done by a certified service technician. You should onlyperform troubleshooting and simple repairs as authorized in your product documentation, or asdirected by the online or telephone service and support team. Damage due to servicing that isnot authorized by Dell is not covered by your warranty. Read and follow the safety instructionsthat are shipped with your product.1. Follow the safety guidelines listed in the Safety instructions section.2. Follow the procedure listed in the Before working inside your system section.3. Remove the cooling shroud.4. If installed, remove the cooling fan assembly. For more information, see Removing the cooling fanassembly section.WARNING: The memory modules are hot to touch for some time after the system has beenpowered down. Allow the memory modules to cool before handling them. Handle the memorymodules by the card edges and avoid touching the components or metallic contacts on thememory module.CAUTION: To ensure proper system cooling, memory module blanks must be installed in anymemory socket that is not occupied. Remove memory module blanks only if you intend to installmemory modules in those sockets.Steps1. Locate the appropriate memory module socket.CAUTION: Handle each memory module only by the card edges, ensuring not to touch themiddle of the memory module or metallic contacts.2. To release the memory module from the socket, simultaneously press the ejectors on both ends ofthe memory module socket.3. Lift and remove the memory module from the system.107
