8 expansion slots, 1 installing an expansion card, 2 configuring an expansion card – Asus P5KPL-AM/PS User Manual
Page 28: 3 pci slots, 4 pci express x1 slots, 5 pci express x16 slot, Expansion slots -18, 1 installing an expansion card -18, 2 configuring an expansion card -18, 3 pci slots -18
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