Mini-itx. A fanless 533mhz CPU that was a 'car' computer. I needed something that actually had a serial port so I could configure a Sun T2000 a while ago. Just about every other box I had was 'legacy free', but that one had the right port - I just needed a RJ11 to DB9 serial adapter. The CD-ROM was SCSI, so I grabbed an internal Adaptec 29160n and a HDD to toss a Linux distro on it. Way overkill. Usually runs with an IDE to CF card, but did not want to mess up what was on that disk.