Lenovo 4215, 4220, 4222, 4219, 4221 manual Installing or replacing a memory module, What to do next

6.Pivot the card latch to the closed position to secure the PCI card.

Figure 10. Installing a PCI card

What to do next:

vTo work with another piece of hardware, go to the appropriate section.

vTo complete the installation or replacement, go to “Completing the parts replacement” on page 40.

Installing or replacing a memory module

Attention

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” in the ThinkStation Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkStation Safety and Warranty Guide, go to: http://www.lenovo.com/support

This section provides instructions on how to install or replace a memory module.

Your computer has four slots for installing or replacing memory modules that provide up to a maximum of 16 GB system memory. When installing or replacing a memory module, use the following guidelines:

vUse either DDR3 ECC UDIMMs or DDR3 Non-ECC UDIMMs for your computer. Do not install both DDR3 ECC UDIMMs and DDR3 Non-ECC UDIMMs in the same computer.

Chapter 2. Installing or replacing hardware 19