An exemplary Peripheral Component Interconnect Express (PCIE) interface card is electrically coupled to a CPU. The PCIE interface card includes a circuit board, a first PCIE interface module arranged on the circuit board, at least one second PCIE interface module arranged on the circuit board, and a PCIE switch arranged on the circuit board. The PCIE switch is electrically coupled to the first PCIE interface module and the at least one second PCIE interface module. The PCIE switch transmits data from the CPU to the first PCIE interface module, and exchanges data between the CPU and the at least one second PCIE interface module.