These can replace existing fluorescent type fittings providing the existing connection leads you have are T5 - see picture 2 for close up of connectors. For the first or only light you cut off the male end and either connect it to your fixed wiring or you can fit a standard 13 amp plug with a 3 amp fuse.
The Seclect T5-LED-1 T5 LED Cabinet/Under Unit Link Light is best suited for commercial environments requiring energy-efficient and visually appealing lighting solutions.