No, the cable does not necessarily have to be from Samsung, but there are some restrictions to consider. The Samsung Wireless Charger Pad (15W) with product ID EP-P2400BBEGEU requires a power supply via USB-C and should be used with an adapter that outputs 9V to achieve the full power of 15W. A standard 5V adapter is not sufficient to utilise the full charging power.

It is therefore important that the cable and adapter used are compatible and fulfil the required specifications to ensure optimum performance. It does not necessarily have to be a Samsung product, but it should meet the requirements of the charger.