| Symbol | Mounting | Structure | Transition |
|---|---|---|---|
| PC-2.1-TB | screw terminal | DC 5,5/2,1 plug; terminal block | adapter |
| PC-2.5-TB | screw terminal | DC 5,5/2,5 plug; terminal block | adapter |
| PC-GP2.1-TB | screw terminal | DC 5,5/2,1 socket; terminal block | adapter |
| PC2.1-F-STB | spring clamp | DC 5,5/2,1 socket; terminal block | adapter |
| PC2.1-FF | - | DC 5,5/2,1 socket; both sides | coupler |
| PC2.1-M-STB | spring clamp | DC 5,5/2,1 plug; terminal block | adapter |
| PC2.1-M-TBR | screw terminal | DC 5,5/2,1 plug; terminal block | adapter |
| PC2.1-MM | - | DC 5,5/2,1 plug; both sides | coupler |