Why Won't My RAM Fit Into My iBook G4?

[DellTheEngie]

I recently purchased a 2003 Apple iBook G4 to use for school. I got it home, played with it for a little bit, then decided to install some RAM into it. I grab my trusty screwdriver, salvage a 1GB stick from a nearby laptop, and try to stick it in. Lo and behold, it won't fit! I've tried a lot of things, but nothing seems to work. What am I doing wrong? Is this even the correct type of RAM?
Link to the RAM I'm using: http://www.ebay.com/itm/Nanya-1GB-2Rx16-PC2-5300S-555-13-A2-667-DDR2-Laptop-ram-/131812915740

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Spoiler

 

[Mycroftxxx]

Long answer: The iBook takes DDR memory. You grabbed some DDR2 memory. They are physically incompatible to prevent someone connecting one kind to a system that takes the other kind and causing all kinds of permanent electrical damage.

Short answer: Either you are trolling, or this is one of the <removed>est ideas I've seen in a long time.

 

[DellTheEngie]

Long answer: The iBook takes DDR memory. You grabbed some DDR2 memory. They are physically incompatible to prevent someone connecting one kind to a system that takes the other kind and causing all kinds of permanent electrical damage.

Short answer: Either you are trolling, or this is one of the <removed>est ideas I've seen in a long time.

i'm just an idiot