Option Slots
Slot 1: 64-bit PCI, full size, PCI Bus 0.
Slot 2: 32-bit PCI, half-size, PCI Bus 0.
Slot 3: 64-bit PCI, full-size, PCI Bus 0.
Slot 4: 32-bit PCI, half-size/shared ISA, PCI Bus 1/ISA Bus.
Slot 5: 32-bit PCI, half-size, PCI Bus 1.