My G4 has a hidden 4th DIMM slot??

[brianleahy]

My system profiler seems to think so. Look at the attached graphic.

Upon opening the case, only 3 slots are visible, and they are all full. Anyone have a clue about this?

And while we're at it, does anyone know if, when your DIMMs have different capacity, does the order of installation affect performance?

 

[ksv]

It probably shows 4 slots because the memory controller supports four slots, but only 3 are actually mounted on the motherboard (that's very typical Apple ). Or there's a bug in the hardware making the computer indentify as an other model. Both earlier and later models have 4 slots.