ProfiLED are spaced at 20mm resulting in 50 LED's per meter. The strips can be cut at any point and extended or have a new header added and plugged into a second pair of output pins. ProfiLED's require both clock and data pins. As supplied the clock is the yellow wire and green is data. It is only possible to drive ProfiLED's from Cube's the AUX outputs, both pins must be in the same PWM group. AUX pins 5 and 6 are a one group. AUX pins 1, 2, 3 and 4 are a second group. It is possible to share a clock pin over multiple strips in the same group. This allows three strips to share a single clock pin in the AUX 1, 2, 3 and 4 group. If you do not need to drive three strips it may be more convenient to setup two clock pins for that group. ProfiLED's require 5 volts from the servo bus, an external power supply such as a BEC must be connected, ProfiLED's can draw a significant amount of current if all turned on at once. ProfiLED's default to white until a valid signal is received.