Definition: Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Input: I'm sure this product is great for G4 Powebooks and G3 iBooks, but nowhere in this product description does it say that this adapter is NOT for use with iBook G4s. I tried this on my iBook G4, and the computer kept switching back and forth between battery power and the power supply from the adapter. I'm returning this to Amazon tomorrow, but am upset that I wasted $20 overnighting this adapter because I absolutely need to use my computer this weekend. I wish they would update the product description to make it explicit that this is for Powerbook G4s and iBook G3s ONLY.
Output:
Negative