iMac G5, 17-inch Take Apart -
Midplane Assembly, No Optical
9. Rotate the computer to the left so the memory is in the position shown below.
10. To release the memory from its slot, push down on the two side latches. Then pull the
memory module out of the slot. Repeat this step if you have a second memory
module.
11. Locate the power supply at the bottom of the computer.