In my LEDs extension cords work perfectly and really allow great lighting results. Even the color-switch programs run without problems, can not understand what others have to suspend the cables everything. The only what you have to get is that the pins are removed on one side of the cable, because it comes with 2 * male plugs of course does not fit, but a female needs. The cable, however, is produced precisely for it, so no problem.
The extensions can be the way most 1m Order shorter, since the power supply also still a cable is to Kontrollbax. Then has the advantage that the control box can be mounted in 1m height and not rumdümpelt on the ground. For operation with the remote control that is of course very convenient.
