Alchemy Power Inc. Pi-BB-RPS Powered Breadboard with Redundant Power Supply (RPS) and more...<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Redundant Power Supply (RPS) for a Raspberry Pi. Includes DC 7-24V DC-DC converter and USB Power-In for RPS combination. Power Supply redundancy.</li><li>Generates 3.3V/0.7A on-board. Does not tax Raspberry Pi 3.3V Power. Ideal for powering electronics for GPIO， I2C etc. Includes a 5V Power-out USB port.</li><li>Dual Layer， powered breadboard. 5V and 3.3V available when any one power source is active. Has 25 columns x 10 rows breadboard. Ideal for attaching breakout boards such as RTC.</li><li>Power supply in use indicated via GPIO. GPIO 21 indicates which Power Supply is active. GPIO 21 = 1 indicates DC 7V to 24V power supply is in use. GPIO 21 = 0 indicates USB power supply in use.</li><li>LED indicates when power is on - either from the USB source or the DC source. LEDs also indicate when each power source is active.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/61bkNVzyNHL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/61oI6gLgApL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/61-8Dmwu-KL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51qNmW2mXfL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/61dD0DFtVxL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/516R7DkmzKL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51b0Bz0%2B%2BbL.jpg" noproxy>