This product is a PCI Express bus-compliant interface card used to provide a digital signal Input function on a PC. This product can input digital signals at 12 - 24VDC. DI-32B-PE features 32 opto-coupler isolated inputs. You can use 32 input signals as interrupt inputs. Equipped with the power for opto-coupler operation (12VDC) supplied and digital filter function to prevent wrong recognition of input signals. Windows/Linux driver is bundled with this product.