Calao Systems is a French company producing small Linux-based computers, roughly the size of a USB key.Devices use an Atmel or a Nomadik processor (based on ARM architecture) and usually offer about 128MB of RAM (up to 1GB for the most advanced models). The operating system is placed in the 128MB - 1GB non volatile memory.Devices are powered via a USB male connector which is plugged into a host computer.