Review on 🔌 Universal 90W AC Laptop Charger Power Adapter for HP Compaq Dell Acer Asus Toshiba IBM Lenovo Samsung Sony Fujitsu Gateway Notebook Ultrabook by Shane Jess

The device looks good enough and comes with a wide range of tips, but it doesn't change its output voltage depending on the tip. I needed a 19V power supply with a 5.5mm tip, which is one of the options, and decided to test it first. No matter what was written on the tip, I got the same 20V. Tried under load and got the same 20V. I tried measuring some tips to find sense resistor values and only found one that appeared to have a measurable sense resistor but also put out 20V. I suppose most people's laptops wouldn't care if the output voltage was 18.5V or 20V, but I needed 19V. Maybe I just got a bad one.