13-slot backplane with 2 PCIe x16 slots, 1 PCIe x4 slot, 4 PCI x1 slots and 4 PCI slots

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Specifications

• External 4-port USB connectors from the mainboard
• Fan connector
• Backplane to mainboard ATX power control connector
• External power on the button connector
• External reset button connector
• External power good connector
• External system management BUS connector
• PCIE X16 SDVO control signal pin
• The I/O power connector indicators for controlling your CPU board