the softwares are not available for download from the official site. After googling, here is one site in cz: tipa from cz has developed a simple "virtual instrument" software for linux QT3. written in Python. In his download site, the USB driver can also be found. the driver will install in windows as libusb-win32 device ZmaTkar However, this device is not working with UNI-T's "virtual instrumetn" software. Right now, I can only use the serial port to communicate with the UNI-T's software...