This is a must have for anyone who uses breadboard to prototype their projects. This module has made life a lot easier, it has fused protected 5V and 3.3V power supply avaiable, you can simply power your circuit from a computer, or a portable  power bank. This module should be a very nice add-on to your electronic toolbox.

Specifications: 

• Input voltage: 6.5-12 V (DC) or USB power supply
• Output voltage: 3.3V or 5V (selectable)
• Maximum output current: <700 ma Two independent selectable output channels
• Size: 53 x 32 mm
• Net weight:12 g
• Package weight:22 g
• Main Color:Black
• Packing Content: 1 x Breadboard Power Supply USB Module