How to match the power input filter parameters of an edge computing box?

The DC 24V power input filter parameters for edge computing boxes should be matched based on the interference source impedance and target impedance. A typical filter structure is a common-mode inductor + X capacitor + differential-mode inductor + Y capacitor. The common-mode inductor should have an inductance of 51-100μH, for example, CML4532A-101T (named CML common-mode inductor 4532, size 4.5×3.2mm, 101T, inductance 100μH, providing >1kΩ impedance in the 100kHz-30MHz range). The differential-mode inductor can be PMS6045R6R8M0T (named PMS T core, high-current inductor 6045, size 6.0×4.5mm, 6R8, inductance 6.8μH, used to suppress low-frequency differential-mode noise). The recommended X capacitor is 0.1-0.47μF 100V MLCC. The recommended Y capacitor is 1000pF. A 2kV ceramic capacitor is connected across 24V. The cutoff frequency of the PE filter should be 1/10 lower than the switching frequency. For example, if the switching frequency is 300kHz, the cutoff frequency should be <30kHz. The final π-type filter has an inductor of 2.2μH and a capacitor of 220μF + 0.1μF. The measured insertion loss is >40dB. The filter meets EN55032 Class B standards for 150kHz-30MHz.