For AC28 and PCI-AC48 adapter cards. For Microsoft Visual Basic or Microsoft Visual C++ Users.
NOTE: This toolkit also includes files for the AC5 adapter card. Do not use these files; they have been replaced. For AC5 cards, you can use version R5.0b of the PC-Based Direct I/O SDK. The filename is PC_Based_Direct_IO_SDK_R5.0b.exe, and it can be downloaded from Opto 22's FTP site.