S460P power adapter replacement - please help

Hi all,

My power adapter for the S460P was chewed by my dog, so it's not safe to use anymore. So I am planning to buy a replacement from third party manufacturer, such as Kensington 120W adapter since it's cheaper.

However, I don't quite understand the wattage requirement. In my S460's power adapter, it says:

INPUT: 100-240V 1.3 - 0.6A
OUPUT: 19.5v - 4.7A

Based on my calculation (voltage X amperage), the wattage requirements are:
INPUT: 100 X 1.3A = 130W
OUTPUT: 19.5 X 4.7A = 91.65W

Now, the Kensington power adapter is advertised as 120W. So in this case, which wattage I need to check between the 3rd party (Kensington) power adapter and Sony' original power adapter? The INPUT (130W) or OUTPUT (91.65W) for Kensington 120W adapter?

Here's Kensington 120W Power Adapter specifications:
Continuous Power Output: Up to 120 watts
Dc Input Voltage: 11-16 VDC
DC Input Current: 11A
Output Voltage: 3-24 Volt DC (Configurable)
Output Current: 6 Amps Max (Configurable)

Note that Kensington 120W Power Adapter specifications does NOT specify what is the AC INPUT wattage, only the DC INPUT and OUTPUT above.

Any help is appreciated.

 

That looks like an auto (12V DC input) adapter from the specs, so it won't have AC input numbers since the input is not AC. What's the model number?

 

Hi J T,

It's 33197.

 

Well, Kensington's website doesn't have much info...except that it's an AC/DC adapter, and from their description (smaller and lighter ...), it sounds like it's a switching adapter which is very efficient.
Since your existing adapter produces 91.65W output, and the Kensington is rated to produce up to 120W output("120 watts--enough to power and charge larger, high-performance notebooks"), you should be fine with it.