Comparison : Item # KPJX-3S, 3 Position Non-Shielded Direct Current (DC) Power Jack Connector
Item # KPJX-3S-S, KPJX Series Snap and Lock Printed Circuit Board (PCB) Mount Receptacle Direct Current (DC) Power Connector
Item # KPJX-4S-S, Brass Contact Direct Current (DC) Power Jack Connector
Item # KPJX-PM-4S, KPJX-PM Series Snap and Lock Panel Mount Direct Current (DC) Non Shielded Power Connector
Item # KPJX-PM-4S-S, KPJX-PM Series Snap and Lock Panel Mount Direct Current (DC) Shielded Power Connector