The ADLINK DAQe-2000 are data acquisition cards for PCI Express interface. They provide simultaneous sampling of four analog input channels, along with analog outputs, digital I/O and counter/timers to suit the PCI Express x1 lane. Multiple cards may be synchronised with the SSI bus for high channel count applications The DAQe 2000 series uses the same technology as the PCI version including auto-calibration to adjust offset and gain errors of the analog input and output channels. The software driver is backward compatible with existing PCI applications enabling easy migration to the PCI Express platform.