$100 Linux wall-wart launches
"Marvell Semiconductor is shipping a hardware/software development kit suitable for always-on home automation devices and service gateways. Resembling a "wall-wart" power adapter, the SheevaPlug draws 5 Watts, comes with Linux, and boasts completely open hardware and software designs, Marvell says."
power found in the servers of only a decade ago.PlugComputer Community
Marvell Linux wall wart using ARM
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ARM Cortex M0 parts from NXP