The power supply of the Amstrad GX4000, a video game console released by Amstrad in 1990.  As of this posting, it is not recommended that you use this original power supply with your unit, as these power supplies have a high rate of failure that could fry your system when plugged in.
<a href="//commons.wikimedia.org/wiki/User:Evan-Amos" title="User:Evan-Amos">Evan-Amos</a>
<span class="int-own-work" lang="en">Own work</span>