USB-PC-Interface zumc-24 Graupner 4186 USB PC Interface System. The modern USB PC Interface System is used for communication (copying and storing) between transmitters and any IBM-compatible PC running the Windows operating system (98 / NT / ME / 2000 / XP). The USB PC Interface System consists of the following items: USB Interface Adapter and PC USB cable, plus associated software on CD-ROM (Interface Distributor not included in the set).