Review on Enhance Your Electronics Projects with MakerSpot Breadboard Power Supply Board Module - 3.3V/5V Dual Voltage by Chase Arellano

Great product - connects to both breadboard power rails to provide 3.3V or 5V for both rails (independently selectable and also off). The board also has 2 3.3V headers and 2 5V headers for power. The power button is a nice touch if you want to keep the AC adapter plugged in. It also uses DC power, USB Type-A, and Micro-USB for power delivery, which is convenient. The seller support (MakerSpot) is also excellent. Excavation. I received a unit with a broken switch (one of the DPDT pins didn't work during testing) and they responded to the issue immediately.