Embodiments of the invention describe a host system capable of associating a PCIe device and another separate device to the same device identifier (e.g., device number). A cycle routing module or logic will identify an I/O transaction involving the device identifier, and route the transaction to one or both of the devices (or, in some instances, identify the I/O transaction as a configuration transaction, and simply update the cycle routing module/logic only). In one embodiment of the invention, a root port of the host system is configured to operate as the above described cycle router.Embodiments of the invention allow for devices to be “merged” into a single device for the host OS. For example, a peripheral devices coupled to the host system via a PCIe link may be “merged” with a peripheral devices coupled to the host system via another PCIe link or a SATA link.