Dell R820, E21S001 owner manual Removing Memory Modules, 2048 8R x4, 1600 MT/s

System Capacity (in	DIMM Size (in	Number of	Organization and	DIMM Slot Population
GB)	GB)	DIMMs	Speed
768	32	24	4R, x4, 1333 MT/s	A1, A2, A3, A4, A5, A6, B1, B2,
			4R, x4, 1600 MT/s	B3, B4, B5, B6, C1, C2, C3, C4,
			4R x4, 1866 MT/s	C5, C6, D1, D2, D3, D4, D5, D6
1024	32	32	4R, x4, 1333 MT/s	A1, A2, A3, A4, A5, A6, A7, A8,
			4R, x4, 1600 MT/s	B1, B2, B3, B4, B5, B6, B7, B8,
			4R x4, 1866 MT/s	C1, C2, C3, C4, C5, C6, C7, C8,
				D1, D2, D3, D4, D5, D6, D7, D8
1536	32	48	4R, x4, 1333 MT/s	A1, A2, A3, A4, A5, A6, A7, A8,
			4R, x4, 1600 MT/s	A9, A10, A11, A12, B1, B2, B3,
			4R x4, 1866 MT/s	B4, B5, B6, B7, B8, B9, B10,
				B11, B12, C1, C2, C3, C4, C5,
				C6, C7, C8, C9, C10, C11, C12,
				D1, D2, D3, D4, D5, D6, D7, D8,
				D9, D10, D11, D12
2048	64	32	8R x4, 1600 MT/s	A1, A2, A3, A4, A5, A6, A7, A8,
				B1, B2, B3, B4, B5, B6, B7, B8,
				C1, C2, C3, C4, C5, C6, C7, C8,
				D1, D2, D3, D4, D5, D6, D7, D8
3072	64	48	8R x4, 1600 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, B12, C1, C2, C3, C4, C5,
				C6, C7, C8, C9, C10, C11, C12,
				D1, D2, D3, D4, D5, D6, D7, D8,
				D9, D10, D11, D12

Removing Memory Modules

WARNING: The memory modules are hot to the touch for some time after the system has been powered down. Allow time for the memory modules to cool before handling them. Handle the memory modules by the card edges and avoid touching the components or metallic contacts on the memory module.

CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

CAUTION: To ensure proper system cooling, memory-module blanks must be installed in any memory socket that is not occupied. Remove memory-module blanks only if you intend to install memory modules in those sockets.

1.Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet and peripherals.

2.Open the system.

3.Remove the cooling shroud.

4.Locate the appropriate memory-module socket(s).

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