IP470 PICMG Bridged Backplane w/ 12 PcI / 2 ISA Bus IP380 PICMG 1.3 Backplane IP314 PICMG 1.3 Backplane IP180 4-Slot (64bit/33/100MHz) PCI or 2-Slot (64bit/66MHz) PCI-X Passive Backplane IP120 3-Slot PCI Passive Backplane IP110 1-Slot PCI Passive Backplane