WQP-DC0050 is a PCB mounting power connectors,has ring type center pin with switch,suitable for many kinds of laptops and notebooks.
Size of center pin:2.0mm and 2.5mm.
PJ number in Europe/Asia is PJ002.
Suggested compatible models:Gateway Solo: 2200, 2250, 2300, 2500, 2550, 5100
Compaq EVO, Presario, HP Pavilion, HP Omnibook, Dell Inspiron and Toshiba Satellite
Pls see below of drawing.