5 x PCIe 3.0/2.0 x16 expansion card slots (single lane support x16, dual lane support x16/x16, triple lane support x16/x16/x8, quad lane x8/x8/x8/x8/x8 mode). 5 x PCIe 3.0/2.0 x16 expansion card slots (single at x16, dual at x16/x8, quad at x8/x8/x8/x4 mode) 4.
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