A PC instrumentation board, be it PCI, PCI-X, PCI Express, PXI or CompactPCI, transforms a standard PC to a universal powerful instrument. Compared to a stand-alone solution there are several advantages like best flexibility, data is rapidly available for calculation, a wide range of available software solutions, software programmable hardware settings for ease of use and highest performance, easy combination of different hardware possible and so on! Setting up a mixed mode system or stimulus-response test benches is no problem combining the wide range of multi channel A/D, D/A and Digital I/O cards with the internal card synchronisation. In contrast to stand-alone instruments which only have one fixed function, the modular instruments can turn into any kind of virtual instrument using the latest PC processing technology. Spectrum is a manufacturer for fast PCI, PXI, CompactPCI instruments. Used as ADC, DAC, transient recorder, data acquisition, signal generator, ARB, digital I/O, pattern generator, DAQ, oscilloscope. A new version of driver for GNU/Linux has been released. In this new version: