Described herein are examples of circuit boards having layered power filtering that is suitable for highly secure and reliable computing, storage, and/or communication systems. One or more of the circuit boards having layered power filtering described herein include one or more power filtering stages that can filter and change characteristics of an input power from a power source (e.g., an untrusted power source or a trusted power source) at each filtering stage as an extra measure of protection in compromising environments. Moreover, one or more of the circuit boards having layered power filtering described herein can reduce or prevent noise and other data induced from surrounding electronic circuitry.

Electronic circuitry surrounding or near the one or more circuit boards described herein can generate noise in various electrostatic or electromagnetic forms, or inadvertently share data across a set of power lines powering the electronic circuitry and the one or more circuit boards. One or more of the circuit boards having layered power filtering described herein can effectively power multiple such components in a common closed spaces, compartments, or chassis.