Prepaid 3G internet for one month

I used to live in Taiwan and now I will go back for a few weeks. Is there any way I can buy a prepaid 3G stick for my laptop computer so that I can surf internet in Taiwan. Obviously I don’t want a subscription since I will only need it for a few weeks so it has to be prepaid. Also it should be a stick to put in the laptop, I don’t want to surf on my smartphone. I know it is possible in many other countries, is it possible in Taiwan?