This is an Intel Atom D410 -powered little computer, with 1GB of memory and a 250GB hard disk, running a custom version of Linux (easily upgraded to the latest Ubuntu or other Linux distro by booting from a USB stick, though).
Like new in the original box with all the original parts (keyboard, mouse, stand, power cable). New at Amazon: $229
Selling for 90 BTC, I'll pay shipping to the US or Canada.