USB data interface for KNX DRA Features: Connection of PC to KNX systems. Addressing, programming and diagnosis of KNX devices. Compatible with KNX Data Secure products. Fast download of applications (long frame support with ETS5 and higher). Compatible with ETS4, ETS5 (and higher). Notes : Compatible with Gira HomeServer version 4.9 and higher. Installation on DIN top-hat rail.