Apple iMac (Early 2006) - Manual (Page 75)

Chapter 4 Installing Memory 75
3 Insert the new memory module into the top slot with the notch facing left as shown in
the illustration.
4 Press the memory module firmly and evenly into the compartment. You’ll hear a slight
click and the levers will close slightly when the memory is seated correctly.
5 Push the levers until they are fully closed.
Levers will
partially close Memory modules