The 4I72 is an adapter that allows use of 4 MINI-PCI type III cards (such as wireless network cards) on a PC/104-PCI host CPU. The 4I72 uses a PCI bridge so that the 4I72 only occupies a single PC/104-PCI slot. The bridge also allows the 4I72 to be used with 5V PCI bus devices since it isolates the MINI-PCI  cards from the PC/104-PCI bus.  The 4I72 can  be jumpered  for slot 0,1,2 or 3 of the host PC/104-PCI  bus.  The 4I72 has a local 3.3V switching regulator for the MINI-PCI cards. Local status LEDS are provided and a connector for external LEDS is available. Note that the 4I72 has two MINI-PCI cards on the front and two MINI-PCI on the back and may not fit with all CPU cards when stacked on top of the CPU.