The invention discloses a
Riser card capable of being flexibly configured, which supports three PCIe (
Peripheral Component Interconnect Express) Slot slots and is additionally provided with a golden finger
edge connector and two high-speed MCIO (Multi-
Chip Input / Output) connectors, one PCIe Slot slot is located at the lowest layer and is connected with the golden finger
edge connector; the other two PCIe Slot slots are positioned on the uppermost layer and the middle layer and are respectively connected with the mainboard through the two high-speed MCIO connectors; and the
Riser card configures two PCIe Slot slots connected with the high-speed MCIO connector in the
Riser card according to the setting of a PCIe channel in a basic input / output
system or a bottom plate management controller, and configures the two PCIe Slot slots as one PCIe x16 or two PCIe x8, and the two PCIe Slot slots are connected with the high-speed MCIO connector in the Riser card according to the setting of the PCIe channel in the basic input / output
system or the bottom plate management controller. By means of the Riser card, a user can flexibly configure the PCIe Slot slot on the Riser card through a BMC or a
BIOS, and the problems that when PCIe devices with different PCIe bandwidths are replaced, the Riser card needs to be replaced, and flexible configuration cannot be achieved are solved; the hardware cost of preparing different Riser cards is reduced, and the corresponding service speed is improved.