Supply of laptops
The characteristics of transformers laptops of all brands.
Voltage "V" in volts, the amperage "A" amp and power (consumption) in Watts "W" are on the transformer and / or in the computer (as labeled).
If you have a laptop, you can send us the features.
Acer TravelMate 4000 : Output 19V 
3.16A, 60W 
Acer TravelMate 630 series : Output 19V 3.42A, 65W
Acer Aspire 1710 : Output 19V 9.5A, 180W
Acer Extensa 5220 : Output 19V 3.42A, 65W 
Acer Aspire 5738Z : Output 19V 3.42A, 65W 
Asus 3AN : Output 19V 3.42A, 65W
Asus X57V : Output 19V 4.74A, 90W
Asus X71A : Output 19V 4.74A, 90W
Asus M51VR : Output 19V 4.74A, 90W
Asus Z96F : Output 19V 3.42A, 65W
universal power supply
DLH model STD-1947 : Output 19V 4.74A, 90W Polarity according to the endpiece
HP DV9000 : Output 19V 4.74A, 90W
HP Compaq nx6310 : Output 18.5V 3.5A, 65W
MSI vr610 : Output 19V 3.42A, 65W
NEC Verca FP520 : Output 19V 3.16A, 60W
Packaerd Bell EasyNote MX52-B-082 FR : 19V 3,42A, 65W
Toshiba Satellite L300 : 19V 3,95A, 75W