# input current vs output current

My old/new laptop adapter specs as given below. I understand the output current for new is 4.5A which is OK when compared to old which provides 3.25A load since it can provide more load.

However, just cant seem to find any idea about input Ampere i.e 1.2A max vs 1.5A(1.5A) I am left with below questions.

• Does max in 1.2Amax mean anything.
• does the bracket (1,5A) mean anything.
• is the new adpater usable inplace of the old

NEW -
90W 20V
AC INPUT 100-240VAC 1.2A max
DC OUPUT 20V / 4.5A

OLD -
65W 20V
AC INPUT 100-240VAC 1.5A(1,5A)
DC OUPUT 20V / 3.25A(3,25A)


I think one of the questions regarding brackets probably might just be dot vs comma notation

3.25A(3,25A)

• Make sure to read existing questions before you ask. Dec 17 '15 at 9:19
• had a fair idea on output current. my questions were for input current and what they meant. Dec 17 '15 at 10:21