Abstract: An interface for coupling a device to a bus suitably includes a first resistive path having a first electrical resistance and a second resistive path having a second electrical resistance different from the first electrical resistance, with a switch configured to switchably couple the device to the bus via the first resistive path if the device operates at a first data rate, and to couple the device to the bus via the second resistive path if the device operates at a second data rate different from the first data rate. The interface may be used to provide an appropriate resistive coupling for devices that support conventional peripheral component interface (PCI) bus standards and/or PCI-X standards.