The current USB Power Delivery specification supports up to 100W of power being delivered. That is enough for phones (well, most phones) and laptops that use 15W processors, but not enough for more power-hungry devices such as a gaming laptop.
The USB Implementers Forum has designed a new specification called USB PD Extended Power Range (EPR) that can deliver up to 240W. This will be done at 50V and 5A (with some safety margin), which is a lot of power – to ensure everything runs smoothly, only Electronically Marked cables will be supported (these include a little chip that can tell the…
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