POW! is a 3HP USB Power Supply Unit for Eurorack.
 
Description / Manual
With this compact module, you can conveniently energize your Eurorack modules using any +5V USB power source. Just plug in a C-Type connector to the USB jack, and you'll have a generous 300mA +12V and 150mA -12V available through the 2x5 male header on the PCB's underside. Remember to have a power cable with 2x5 female connectors at both ends.
 
Control the power flow with the built-in switch, with an LED indicating the current status. Tailored for modest power needs in compact setups, this Power Supply Unit is designed to accommodate one or two modules in small cases.