A device, which may be a peripheral device or a host computing device, comprises a communication interface, a memory and a processor. The processor is arranged to detect imminent disconnection of a communication link between the peripheral device and the host computing device and in response to detecting the imminent disconnection of the communication link, to trigger a data transfer from the host computing device to the peripheral device via the communication interface. The data transfer defines, at least in part, a fixed output data set which, after disconnection, is output via an output device in the peripheral device.