If you are installing a memory module, open the retaining clips of the memory slot into which you want to install the memory module.

Figure 58. Opening the retaining clips

10.Position the new memory module over the memory slot. Make sure that the notch 1 on the memory module aligns correctly with the slot key 2 on the system board. Push the memory module straight down into the slot until the retaining clips close.

Figure 59. Installing a memory module

11. To complete the installation or replacement, go to “Completing the parts replacement” on page 160.

Installing or replacing a PCI card

Attention:

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” in the ThinkCentre User Guide. To obtain a copy of the ThinkCentre User Guide, go to: http://www.lenovo.com/ThinkCentreUserGuides

This section provides instructions on how to install or replace a PCI card. Your computer has two standard PCI card slots, one PCI Express x1 card slot, and one PCI Express x16 graphics card slot.

To install or replace a PCI card, do the following:

1.Turn off the computer and disconnect all power cords from electrical outlets.

2.Open the computer cover. See “Opening the computer cover” on page 121.

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Lenovo 4479, 4471, 4466, 4498, 4480, 4485, 4474, 4496, 4477, 4497, 4476, 4495, 4499, 4473, 4468 manual Installing or replacing a PCI card

4476, 4499, 4485, 4497, 4480 specifications

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