The Voltage Regulator Module (often called a VRM) is made by CTRE. It takes a 12 V input, and gives consistent 5 V and 12 V outputs at 500mA and 2 A for each voltage.

Voltage Regulator Module Wiring
The Voltage Regulator Module is wired to one of the larger ports on the Power Distribution Hub or Power Distribution Panel 2.0, and provides power to devices like CANcoders, CANivore, and cameras.