Power supply wire/plug to new full fibre ONT box

[JC9]

Just upgraded to full fibre and the plug wire is not long enough to go from new ONT box to socket without using an extension. Is it possible to get a plug with a wire of at least 4m? Alternatively, could I be provided with the spec of the
power supply so that I could try and obtain one myself? It's an OpenReach power supply.

[WSH]

The spec is usually printed on the power supply.

You can get dc power extension leads off Amazon etc.  Just make sure the plug is the correct diameter as the internal/external diameters do vary.  Most common are 2.5 or 2.1 mm but there are other sizes out there.  (Easiest way to check is by inserting a metric drill bit as a gauge).