This item is a Krone 10-pair disconnection module, a type of telecommunication connector block.It is used in structured cabling systems to connect, disconnect, and test telecommunication lines without stripping wires, utilizing Insulation Displacement Connector (IDC) technology.These modules are commonly made of plastic, often in white, and are designed to be mounted in panels or distribution boxes.They support up to 10 pairs of cables for reliable and secure telephone or data wiring