Lenovo ThinkCentre A58 User Manual - Page 98

5. Position the 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 9. Installing the memory module What to do next: v To work with another piece of hardware, go to the appropriate section. v To complete the installation or replacement, go to "Completing the FRU replacement" on page 120. 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 Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide, go to: http://www.lenovo.com/support 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. 92 Hardware Maintenance Manual