The KNX TP-USB Interface is designed for an intelligent building control system, which is used for facilitating communication between the PC and the KNX system. The device can connect the USB communication interface to the computer through a standard type A USB2.0 interface extension line, and the other end of the device can be connected to the KNX bus via a bus connection terminal. If the KNX bus on the device side is long enough, it can also be directly connected to the computer without USB extension line.