Wire AC/DC Power-Supply to multiple devices
To prevent glitches on hot insertion some decoupling is necessary.   

Consider the step load of 1A plus the ESR of the onboard caps vs the source ESR.   Step load regulation is this ratio of impedances when you want &lt;5% step load error.

This is typically done so that the response time of the step load is slower than the sources reaction time which may be in the 10~1000us time depending on quality and excess power of the source .  This can be accomplish with chokes, caps and/or holding current ICL’s and / or inrush current limiting polyresistors with NTC at 120’C and draw ~0.5W