My laptop's charger was not working anymore. So I bought a new one. However I couldn't find an exact matching charger, I bought a different one. My question is; Will there be any problems with new charger? Specifications of chargers are below;  Original charger: 65W, input: 100-240V, 1.6A, 50-60 Hz, output: 18.5V, 3.5A  The new one I bought: 90W, input: 100-240V, 1.5A, 50-60Hz, output: 19V, 4.74A
My laptop's cable broke and sadly it seems like I need to buy a new power supply.  What I wonder is, I've found that universal power supplies are much cheaper than the official HP ones. Are they really worth it?  Another question: the original supply has these specs: 65W, 18.5V, 3.5A. However the universal supplies are more powerful (90W, 100W) and come in integer voltages (17V, 18V, 19V, etc). Are they compatible? Should I set them to 18V or 19V?
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