Power supply of a project
https://www.sparkfun.com/products/8376


  SparkFun Breadboard Power Supply USB - 5V/3.3V
  PRT-08376 RoHS
  
  Description: A very simple breadboard power supply kit that takes power from any USB port and outputs a fuse protected and regulated 3.3V.


Judging from the image there is also an unfused direct 5V output, directly taken from USB. Beware not to draw too much current from USB, a normal PC cannot source more than 500mA.



Looks pretty similar to the picture you provided: