A range of Cat 3 single port Vertical (Top Entry) PCB mount Modular RJ45, RJ25, RJ14 snd RJ22 Jacks with black UL 94V-0 plastic housings and optional shielding. These Cat 3 PCB mount Modular RJ45, RJ25, RJ14 snd R22 Jacks are available as PCB through hole