An example electronic device may include a peripheral component interconnect express (PCIe) connector that includes a number of lane ports that may be arranged in a row. Physical lane numbers of the lane ports in a first half of the row may be in either an ascending order or a descending order from a first end of the row toward a middle of the row. Physical lane numbers of the lane ports in a second half of the row may be in either a descending order or an ascending order from the middle of the row toward a second end of the row. The order of the second half may be ascending when the order of the first half is descending, and the order of the second half may be descending when the order of the first half is ascending.