An interface device includes a first connector to connect to a port of a switch, where the switch sends data packets at a first rate and a second connector to connect to a port of a device, where the device sends data packets at a second rate slower than the first rate. A physical control layer connects to the first connector and the second connector to control a flow of data packets. The physical control layer throttles down the flow of data packets to the second connector when the data packets are travelling from the first connector to the second connector, and matches a speeds of the flow of data packets to the first connector when the data packets are travelling from the second connector to the first connector.