A:Answer At the Targus Website, it does not tell you, however I downloaded the User Manual. Right there it states:
Output: 19.5 VDC, 4.62A, 90 W max
Almost all Laptops / Notebooks since 2005 require about 19 to 20 Volts. This is pretty much a standard Voltage.
The key difference is in how much CURRENT the charging system will DRAW from the Charger.
WATTS (a measurement of ability to do work) = Volts x Amperes
65 W / 19.5 Volts = 3.33 So it will be provide UPTO 3.4Amps
a 90W Laptop requires 19.5 Volts x >= 4.62Amps
Voltage is a PUSH - that is why if you plug a 110V item into a 220V outlet it burns out
Amperes is a PULL, you can plug a 19.5V 3.5 Amp device into a 19.5V 10Amp supply with no problem.
BTW, you can usually go up or down at least 10% - you can charge / run on 17 - 22 Volts.
SO, YOU CAN GET A CHARGER WITH HIGHER AMPERAGE THAN REQUIRED - IT MAY CHARGE FASTER, IT MAY NOT, DEPENDS
UPON WHETHER THE DEIVCE'S STATED WATTS IS A REQUIRED MINIMUM OR A MAXIMUM. IT WILL NOT DAMAGE IT.
I Had an HP Notebook which charged much faster with this than the supplied 65W charger
