I saw that the USBEE download page has USBee Suite for DX, AX, ZX, SX and BusBee software.
Maybe I needed some other software that worked better. So did not anything that needed analog inputs (scope, multimeter etc.) Simple pulse counting program and frequency counter for example worked as expected. For example in logic analyzer program the sample rate settings did not seem to affect anything. Some of the USBEE AX software worked OK, some did not work as expected. Some of the programs on the software suite worked well, some not entirely correctly and some not at all.
So this box is really is more like an USBEE ZX. So this box is a clone that only supports the digital logic analyzer functions, and doesn’t have the analog circuitry (ADC) to read analog voltages. The applications with voltmeter just show some random voltage because the box I got does not have analogue input like (real USBEE AX PRO has analogue input). I downloaded USBEE AX PRO software and installed it. Google search headed me to USBEE download page. Then go to Internet and find the software. The package did not include any instructions or software. Interesting that the USB cable that came with the device was Nokia USB cable (KDE-2). The color of the device was black (in original product picture it was white). The package included just logic analyzer, USB cable and signal cabled (dupont line). Support protocol: SPI, IIC, UART, SMBus, I2S, CAN, Parallel, Custom, Search, Async, 1-Wite, PS/2. 24 MHz on the low side for a logic analyzer but is enough for debugging quite a lot of common protocols. sample rate: 24MHz 8 channels Input voltage range: 0~5V Low input voltage: 1.4V. The specifications of the product seemed to be pretty OK for a cheap logic analyzer: Max. I have not tried USBEE software before (but I have seen some good comments on it), so it is worth to try and compare how well it performs against Saleae Logic. This one was really cheap (around 10 Euros). I had previously looked at the USBee but thought they were too expensive. When browsing Dealextreme New Items one day I saw Logic Analyzer w/ DuPont Lines and USB Cable for SCM – Black product that was described as USBEE AX PRO.