DC She 2.1mm to DC he 5.5 x 2.5mm adjustment plug

DB9 FEMALE connector
Threaded screw for DB9 cable assembly
RS232 with terminal block 1-9 screw terminals
Can be used for RS232/485/422
With plastic protection Open/close

VGA female connector with 16 pin screw terminal block

Power Jack female connector 5.5/2.5mm screw terminal block.
Connects loose wires.

Power Jack male connector 5.5/2.5mm screw terminal block.
Connects loose wires.