USB Implementers Forum, the organization behind the development of the USB standard and its iterations, has today announced the latest revision to the USB-C standard. In the latest 2.1 version of the USB-C specification, we are in for a surprise when it comes to power delivery. With the previous 2.0 standard, USB-C was rated to deliver a minimum of 3 Amps at 20 Volts or carry a high-power 5 A current that is capable of delivering 100 Watts at 20 Volts. However, in the latest specification, the USB-IF has decided to bump up the power delivery target to a whopping 240 Watts.

This means that with the 2.1 specifications, the USB-C standard will be able to output as much as 48 Volts with a 5-Amp current. While this is a somewhat big change, that doesn't mean that you have to throw away your old USB-C cables. In the mode called Extended Power Range (EPR), the USB-C 2.1 will still work with all of the existing plugs. The plug is physically the same, however, for EPR to work it has changed the connector configuration a bit where pins for power delivery and USB 2.0 support can no longer short to ground, to prevent arcing when the cable is unplugged. The EPR cables will carry an electronic mark with them, so all of the devices will ask them how much power they can carry before transferring it over those cables. The 240 Watt bump will enable us to see more mobile devices, like laptops, with the ability to charge over a USB-C cable.