beige box

noun3

1. •
   A desktop computer in the style typical of personal computers of the 1980s and 1990s, having a boxy off-white case and CRT monitor.
2. •
   An outdated personal computer.
3. •
   A device used in phreaking, technically equivalent to a telephone company lineman's handset: a telephone fitted with alligator clips to attach it to a line.