This board by the CH365 and two programmable devices 16V8 composition, the top of this board provides an 8-bit ISA slot. In use, the bottom of the board into the computer's PCI slot, the top ISA slot, you can insert the original ISA bus I / O card, which can be quickly ported to the original ISA board PCI bus. In addition, this board can also test the custom PCI board CH365 ID function.