New USB Logos Show Charging Capabilities Up to 240W

USB
(Image credit: USB-IF)
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Anton Shilov
Contributing Writer

Anton Shilov is a contributing writer at Tom’s Hardware. Over the past couple of decades, he has covered everything from CPUs and GPUs to supercomputers and from modern process technologies and latest fab tools to high-tech industry trends.

  • ThatMouse
    And a billion usb ports installed around the world go obsolete as they up the voltage.
    Reply
  • Krotow
    ThatMouse said:
    And a billion usb ports installed around the world go obsolete as they up the voltage.

    Nope. To enable higher voltage, you need USB charger who can enable higher voltages, device who can report a capability to charge in higher voltage modes and a cable capable to deliver enough power. And all high power capable USB cables have chip in one of connectors who return info to charger and devices as acknowledgement that you are using proper cable. Without that charger will stuck to 5V / 2A.
    Reply
  • Rdslw
    ALL USB's have backward compatibility to this point. new power levels though are a problem, at least at description level.

    I needed a charger that did 9V and 2.1 amps. that's 20W charger.
    Most say 20W capable and that's it, it won't tell you that its 5V4A or 9V2A or 15V1.5A or 20V1A all of them or that any of them is missing.
    Its even worse if charger have 2/3 slots, and 9V is only on one of them.
    My phone charges with 5 or 9 Apple devices do only 5/12 or 5/20.
    I am glad guys like anker show those on each product, but that should be standard info.

    IMHO, they should force disclosure of all supported tiers on the packaging if they certify any level. any way that you could know this, if manufacturer suck, would be nice
    Reply
  • InvalidError
    Krotow said:
    Nope. To enable higher voltage, you need USB charger who can enable higher voltages, device who can report a capability to charge in higher voltage modes and a cable capable to deliver enough power. And all high power capable USB cables have chip in one of connectors who return info to charger and devices as acknowledgement that you are using proper cable. Without that charger will stuck to 5V / 2A.
    Actually, the E-Mark chip is only required for current over 3A and USB-PD will happily deliver up to 20V/3A (60W) over plain dumb cables.

    For the new 48V "Extended Power Range" stuff, you need new cables with EPR chips in them since the old E-Mark cables have chips and possibly other components only designed for 20V.
    Reply
  • Alvar "Miles" Udell
    Logos will be placed only on the packages of certified cables, hosts, and chargers.

    So how long until we see a recall where the wrong cables were placed in the wrong packages resulting in fires and damaged equipment...They should require a marking on the cable itself if it supports 240w, like one end being solid red.
    Reply
  • InvalidError
    Alvar Miles Udell said:
    They should require a marking on the cable itself if it supports 240w, like one end being solid red.
    I'm pretty sure "marking on the cable itself" is the whole point of the B&W "cable and port logos" in the logo table, just like the "SS" logos usually embossed into USB3.x cable connectors to identify cables with the extra high-speed lanes.
    Reply
  • Alvar "Miles" Udell
    InvalidError said:
    I'm pretty sure "marking on the cable itself" is the whole point of the B&W "cable and port logos" in the logo table, just like the "SS" logos usually embossed into USB3.x cable connectors to identify cables with the extra high-speed lanes.

    I see the article has been corrected now.
    Reply
  • DougMcC
    Only 240w? When am i going to be able to power my 1600w PSU off of usb?
    Reply
  • InvalidError
    DougMcC said:
    Only 240w? When am i going to be able to power my 1600w PSU off of usb?
    Skip the conventional PSU altogether, go straight 48VO!

    Give each major component however as many type-C connectors as needed for however many adapters are required to meet their power requirements!
    Reply
  • ThatMouse
    Krotow said:
    Without that charger will stuck to 5V / 2A.

    AKA obsolete.
    Reply