1 x 8-pin ATX 12V motherboard power socket. 1 x 4-pin ATX 12V motherboard power socket. 4 x PCIe 3.0/2.0 x16 expansion card slots (x16, x16/x16, x16/x8/x8 or x16/x8/x8/x8 mode with 40-LANE CPU; x16, x16/x8, x8/x8/x8 mode with 28-LANE CPU) 2.
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