Buy the capability you need. Keep the money you don’t.

The question behind this site

You can buy a 100W charger and still leave too little power for your laptop. You can buy a 240W cable and still have a slow storage connection. Spec Before Spend exists to make those differences clear before checkout.

Who makes it

I’m Yuanqiang Leng. I’m building this publication around practical questions about laptop charging and desk connections. The current articles compare documented specifications and explain their consequences; they are not presented as hands-on laboratory reviews.

What a useful recommendation includes

A specific setup, the material trade-off, a reason to buy and a reason to skip. Sometimes the answer is a different port or an accessory you already own. That is still a successful buying guide.

Start with your setup

Use the charger comparison on the homepage, or browse the guides for charging, cables, displays and storage. Each guide links to its sources and the next relevant question.