The PCI-Express analog I/O board APCIe-3121 / APCIe-3123 has 16 SE/8 differential inputs, 4/8 analog outputs, 16-bit, and 8 digital I/O. The board is especially suited for applications in industrial process control, measurement technology and monitoring, for example for multichannel data acquisition, for the control of chemical processes, for the acquisition of sensor data, current measurement etc. in the harsh industrial environment.64-bit drivers for Windows 8/7/Vista and drivers for Linux as well as programming samples are included. Real-time drivers for Linux and Windows are available on request.