I think it's a capacitor marked "222F" (2,200pF) +/-1%. However, it seems encased and has 4 pins instead of 2. Two seem to be for the capacitor and the other two for the plastic looking bracket around it. First I thought it was a coupled inductor of sort. Peaking inside a small opening it looks like a capacitor based on the color. It's about 3mm x 3mm x 2mm square. The arrows point to the mounts, there is one more on the other side not showing in the picture. Thank you.
Best Answer
They are Panasonic's "Coil Type EMI Filter" as given in Armandas' answer. I just wanted to add some extra info.
They are mostly T type LC filters:
simulate this circuit – Schematic created using CircuitLab
The numbers indicate the capacitance inside the module. So, "222" means 2200pF. The module acts as 3rd order LPF and each model has a different cutoff frequency:
Panasonic has stopped manufacturing those, so the whole series became obsolete. But if you want to replace it (unlikely) you may be able to find at Digikey.