Rouster is a credit card-sized personal computer powered by a subscription cloud service. It works with the ever-growing number of shells to turn it into any personal computing device: laptop, desktop, tablet, game console, etc. We reduce the overall price and spread it across its lifetime. Rousters don’t need physical upgrades and users can increase/decrease their computing power at any time. Rousters are safe, reliable and allow users to use their personal computer in any desirable form.