Any speaker under 240 watt must be powered by a user replaceable USB-C cable. This will not only include PC speakers, but any standard speaker using an 3.5mm speaker plug. This will include most speakers that you might find on the shelves these days. Since homes are to have adequate USB-C ports in the wall for charging and power, this shouldn’t be much of an inconvenience. Exceptions to this will be in-wall speakers which will plug in as normally.