MacBook and MacBook Pro power adapter

Quick question: I have a MBP, and my girlfriend has an MB - is it safe to use the power adapters interchangeably?
I notice that the MBP has two power ratings on it, whereas the MB only hasone - does this mean that the MBP PSU is smart enough to know which rating to use, whereas the MB PSU will only charge the MBP at the lower rating?
Or should the chargers only be used with the machines they are delivered with?
thx
Simon

Hi Simon,
The power adapter for the MBP is OK for the MB but the reverse is not recomended as the MB adapter is not as powerul. The MacBook doesn't have the hardware, graphics card, processor, lighted keypad, etc.
Sweet Polly

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