Why two power ports on a budget laptop??
(08-03-2020, 04:28 AM)jiyong Wrote: There is a problem that because of security, some devices no longer work properly with all chargers.
One example is my Yi 360 camera, that I can only charge with a cheap USB-A to USB-C adapter cable, as I can no longer charge directly from a USB-C charger.
Funny detail is that my phone refuses to charge with that cheap USB-A to USB-C adapter cable.

But in general I'm really happy with USB-C.
Now I only need one charger for my laptop and phone.
And even when I forget to bring a charger, there is someone around with a USB-C charger.

And that's the crux of the issue with power delivery over USB type C - the variety of power delivery specifications and chance that even if that charger has type C connector it's not quite compatible with your device because of the limits on the voltage and current it can deliver. And then there are some devices for which USB power delivery is a complete no-go due to their power requirements, like gaming or mobile workstation laptops that need more than 100W of power. With a dedicated power supply that just provides fixed voltage and up to fixed current none of those are an issue, though yes you'd have to carry one with you instead of relying on someone else having one handy for you to borrow.

Of course, neither of the above should be of much relevancy in PBP context, though even there I found out that I have two different USB cables where one charges the laptop almost as fast as the dedicated charger (not quite though), and another provides barely enough current to charge the laptop when it's idle.

You don't want to use the barrel port - don't use it, you don't want to pay for barrel port - look for a laptop without one. I, for one, like my barrel port because it allows me to use the single type C port without resorting to docks and dongles, so equivalent replacement for no barrel port would be two type C ports, which I'm certain would be more expensive than one type C and one charging port. And most importantly, I always know that if the power supply is rated for 5Vx3A with correctly sized connector and polarity then I don't need to still worry about the USB cable I use to connect it to the laptop, it'll always charge at ~15W.
This message was created with 100% recycled electrons

Messages In This Thread
RE: Why two power ports on a budget laptop?? - by moonwalkers - 08-03-2020, 08:03 AM

Possibly Related Threads…
Thread Author Replies Views Last Post
Question UK Power Supply Feakster 12 6,923 08-26-2021, 10:03 AM
Last Post: JAGER
  Motherboard malfunction - a possible warning about power supplies mjc 8 511 07-28-2021, 01:04 PM
Last Post: mjc
  Increasing the maximum power draw dsimic 12 6,463 06-11-2021, 10:34 AM
Last Post: dsimic
  Alternative Power supply options gallomimia 10 6,441 02-13-2021, 04:36 AM
Last Post: angryminer
  Blinking red light for charger, no power-on bifo 9 2,765 01-07-2021, 07:31 AM
Last Post: dsimic
  Pinebook Pro Dock Power Requirements calinb 9 4,113 12-16-2020, 09:24 AM
Last Post: dsimic
  Auto-wake behavior when external power is connected diodelass 7 3,998 12-05-2020, 01:19 AM
Last Post: dsimic
Question Powering off & won't power back on w/o battery disconnect jimsurvak 5 1,961 11-10-2020, 08:42 PM
Last Post: wdt
  Horrible screen flicker/strobe on battery power mattjb 19 11,261 09-14-2020, 03:19 AM
Last Post: m.bakhterev
  Privacy switches - cutting power to wifi card as400 1 1,332 08-10-2020, 09:48 AM
Last Post: belfastraven

Forum Jump:

Users browsing this thread: 2 Guest(s)