Lol. It's just six caps soldered to a PCB.
And some little ceramics for some of the high-frequency noise, so they at least get a little credit for thinking of that.
They also thought ahead enough to include pads for through-hole caps, just in case.
Or hell, you could mod that thing and add the through-holes too.
:hmm:
So how much capacitance would you be able to add to the PCIe bus before its power supply circuitry sees it as a short-circuit at power-up and simply shuts back down?
I've got some 50 Farad caps here at work.
Plugging in a power supply to those things when they're uncharged pushes the thing into overload mode. It
slloooowly ramps up its output voltage as it charges the cap.
That much capacitance is fun, even at only 2 volts.