DC connector male 5.5/2.5mm screw terminal block

Power Jack male connector 5.5/2.1mm screw terminal block.
Connects loose wires.

DB9 She stick
RS232 with terminal block 1-9 screw terminals
For RS232/485/422
Open/close plastic protection
With thumb screws

DC7.9 til 5.5mm Power Charger Laptop Adapter Tip Connector converter.

Til Lenovo el. IBM notebooks

Power Jack female connector 5.5/2.5 mm terminal block with push-down clamp.
Connects loose wires.