Drivers for converters and controllers for connection to a USB interface.

SMCI-3x-1 USB Operating System: from Win XP 4 MB zip
ZK-RS232-USB Converter from USB to standard RS232, fits on ZK-RS485-RS232, Operating System: from Win 2000 7 MB zip
ZK-RS232-USB-3.3V for SMCI-35, Operating System: from Win XP, Linux, Mac, Win CE 6 MB zip
ZK-RS485-USB und SMCP33-EVA for Interface Converter ZK-RS485-USB and SMCP33-EVA with USB interface, Operating System: from Win 2000, Linux, Mac, Win CE 22 MB zip