Breadboard Power Supply Module 3.3V / 5V For MB-102 & Solderless Breadboards | eBay
Amazon.com: ALAMSCN 3.3V 5V MB102 Solderless Breadboard Power Supply Module with 9V Battery Clip Power Cable 2.1x 5.5mm Male DC Jack Plug for Arduino (Pack of 3) : Electronics
Breadboard Power Supply Module 3.3V 5V USB for Arduino Raspberry Pi Board MB102 | eBay
Breadboard Power Supply 3.3V and 5V with Micro USB Connector and FT232RL Chip for Arduino | Sandbox Electronics