A friend has an older laptop which uses PC2100 DDR-266 200 pin SODIMM's. I have a P2-5300 DDR2-667 200 pin SODIMM left over from an upgrade.
It looks to me that both are keyed in the same spot on the RAM so I'm wondering if my DDR2-667 RAM would work in the DDR-266 slot.
I don't care that about the fact that this is like putting a car engine in a lawnmower, I just want to know definitively if it will work without damaging the RAM or laptop.
I'm not looking for guesses, I need a yes or no from someone that knows about RAM.