It's a power entry part of a DAQ card, the bottom right is a DC jack. The power flow maybe:
Power DC jack -> ferrite bead -> cap -> common mode inductor -> cap -> ?
I guess the bigger black one may be a common mode inductor too. But I've never saw such a bigger one in this kind of package, and it seems it's full shielded, can't see the coils from side.
May anyone give some clues?