Professional quality 19" 1/4"patchbay 2 row 24 way (48 jacks total) using high performance self cleaning 1/4" jack sockets. The unit is unwired to allow you to wire directly to your own connectors/ equipment. Each jack has 3 large solder pads (screen, Hot, Cold) for you to solder your wiring to. Normalling is done by simply adding and removing jumpers. A cable management tray is provided for securing you cables. Designation strips are provided for easy labelling. Wiring and Normalling instructions are supplied with the unit.