IBM 6648 User Guide - Page 65

Use 3.3 V, 133 MHz, unbuffered, SDRAM DIMMs., Notes

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Your computer uses dual inline memory modules (DIMMs). The IBM-installed DIMMs that come with your computer are unbuffered, synchronous dynamic random access memory (SDRAM). When installing DIMMs, the following rules apply: v Fill each system memory connector sequentially, starting at DIMM 1. v Use 3.3 V, 133 MHz, unbuffered, SDRAM DIMMs. v Use only 64, 128, or 256 MB DIMMs in any combination. Notes: 1. To locate the memory connectors on the system board, see "Identifying parts on the system board" on page 48. 2. To open the retaining clips on the DIMM connectors in the desktop model, you will have to remove the AGP adapter first. a. Remove the adapter slot cover latch. b. Remove the AGP adapter. To install a DIMM: 1. Remove the cover. See "Removing the cover" on page 45. 2. If the retaining clips are not already open, open them. Chapter 5. Installing options 51

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Your computer uses dual inline memory modules (DIMMs). The IBM-installed
DIMMs that come with your computer are unbuffered, synchronous dynamic
random access memory (SDRAM).
When installing DIMMs, the following rules apply:
v
Fill each system memory connector sequentially, starting at DIMM 1.
v
Use 3.3 V, 133 MHz, unbuffered, SDRAM DIMMs.
v
Use only 64, 128, or 256 MB DIMMs in any combination.
Notes:
1.
To locate the memory connectors on the system board, see “Identifying
parts on the system board” on page 48.
2.
To open the retaining clips on the DIMM connectors in the desktop model,
you will have to remove the AGP adapter first.
a.
Remove the adapter slot cover latch.
b.
Remove the AGP adapter.
To install a DIMM:
1.
Remove the cover. See “Removing the cover” on page 45.
2.
If the retaining clips are not already open, open them.
Chapter 5. Installing options
51