Most modern tv's have inbuilt usb ports built into the side or back, just like pc screen monitors, this tape works by being stuck to the back of your screen and when you power up your tv or monitor, the warm white led tape will automatically illuminate, to create a soft backlighting effect'. '.strtoupper('t')he set includes 2 x lengths of 50cm led tape'. '.strtoupper('l')ong enough to add to screens from around 22 tv's and monitors are measured diagonally and usually in inches...so measure the top and bottom of your screen for suitability'. '.strtoupper('d')on't have in built usb ports'? '.strtoupper('f')ear not, you can use a usb mains adaptor plug, and switch the tape on and off manually'. '.strtoupper('2') x 50cm warm white 2700k led tapeseach strip has 30 warm white ledsplug direct to usb to add a warm white ambient lightstatic only setting.