DC Jack female connector 5.5/2.1mm with terminal block for loose wires

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

Moxa NP21103

DB25(M) Termininal Block Kit for RS-422/485

2-pole screw terminal block
2EDGE 5.08mm
Suitable for industrial or embedded PCs

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