This product is a PCI Express bus-compliant interface card that can perform the input/output of LVTTL level bi-directional digital signal. This product can input and output up to 48 channels. You can select the input/output by the application software in eight signals units. This product supports a Low Profile size slot and, if replaced with the supplied bracket, supports a standard size slot, too. Using the bundled API function library package [API-PAC(W32)], you can create Windows application software for this card in your favorite programming language supporting Win32 API functions, such as Visual Basic or Visual C++.