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Expansion Slots 3 x PCI-E x1 slots Storage 1 x slot, 6 x SATA 6Gbs USB ports 2 x USB + 4 x USB + 6 x USB LAN Realtek® 8111H

No the main graphics slot and the are wired to the CPU and use CPU lanes The other x1 slots are also wired to the chipset which is why they are lanes

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msi slot MSI B450 TOMAHAWK MAX READY TO DOMINATE Military style with extended heatsink design for better thermal solution, plus DDR4 Boost, Core Boost, Turbo and