This Breadboard Power Supply would be the best-bud of your breadboard. Not only It can fit directly on any standard breadboard but it is also designed compact to save space on your prototyping area. It can source-out power from two ways: a mini USB or standard power jack 7-12V. You can also select 5V or 3.3V supply by using jumper cap. It will enable you to have on both lanes of your breadboard.