For the 19V 6.32a and 19V 6.3a, it really doesnot matter, 6.32 is kind of rouded off into 6.3. You can use it with confidence.
BTW, I bought my replace adapter on amazon brand named Anker with UL listed(http://www.amazon.com/dp/B006DA8TEK), which works perfectly, never gets hot, no noise at all...