My USB ports don't seem to provide enough power
ElDuderino
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jeannets Posted messages 28340 Registration date Status Contributeur Last intervention -
jeannets Posted messages 28340 Registration date Status Contributeur Last intervention -
Hello,
this summer I upgraded my PC, which seems more than correct. I'll briefly give you the config that might help to find a solution to my problem,
-the case is a NZXT H442, the USB ports on the top of the case are powered by a small electronic card inside the case that powers the 2 jacks 3.5mm, the 2 USB 3.0, and the 2 USB 2.0
-the motherboard is an Asus B85-PRO GAMER,
-the power supply is a Lepa 650W MX F1,
the rest doesn't matter much I guess for a USB port problem but I'll still include it here:
http://www.driverscloud.com/fr/configuration/42283743-1/resume
in short, I have 2 external 3.0 hard drives, the case does not allow for an internal disk drive, so I recently bought an external one on Amazon, it uses 1 USB 3.0 port and 1 USB 2.0, I have a keyboard, a wireless mouse, a small USB dongle for Bluetooth to use a Bluetooth headset with my PC, and just that, getting to work:
-keyboard 2.0
-mouse 2.0
-2 hard drives 3.0
-external disk drive that uses 3.0 and 2.0 connections
it's not working, my PC makes connection/disconnection sounds frantically when these 5 devices are plugged in, it seems like there just isn't enough power for all the USB ports,
if I add my mobile (Sony Xperia Z3 which crashes Windows Explorer when I connect it), my iPad 2, and my 2 desk lamps that can be plugged in via USB 2.0, the computer has no chance of being powered enough to run all that, even though the case has a lot of USB ports, finally one of my 2 screens, an iiyama prolite gb2488hsu-b1, offers 2 USB ports at the back but I will never be able to use them because the power supply for the USB ports just won't allow everything to run.
I've searched a lot on French and English forums but I haven't found anything that seemed to answer this question, and finally I currently have only one GTX970 graphics card for my 2 screens and I was wondering if I could plug in my old GTX650 to run the second screen independently from the first, as I often play while having something else on my second screen, I would like to have both screens on 2 different graphics cards.
Thank you very much for your help because I got Battlefield 1 yesterday and I can't install it if I can't get both my external hard drives and my disc drive working at the same time. I had the same problem with Mafia 3 recently and it’s frustrating to be penalized like this just because I have some of my games in physical version..
Configuration: Windows / Chrome 54.0.2840.71
this summer I upgraded my PC, which seems more than correct. I'll briefly give you the config that might help to find a solution to my problem,
-the case is a NZXT H442, the USB ports on the top of the case are powered by a small electronic card inside the case that powers the 2 jacks 3.5mm, the 2 USB 3.0, and the 2 USB 2.0
-the motherboard is an Asus B85-PRO GAMER,
-the power supply is a Lepa 650W MX F1,
the rest doesn't matter much I guess for a USB port problem but I'll still include it here:
http://www.driverscloud.com/fr/configuration/42283743-1/resume
in short, I have 2 external 3.0 hard drives, the case does not allow for an internal disk drive, so I recently bought an external one on Amazon, it uses 1 USB 3.0 port and 1 USB 2.0, I have a keyboard, a wireless mouse, a small USB dongle for Bluetooth to use a Bluetooth headset with my PC, and just that, getting to work:
-keyboard 2.0
-mouse 2.0
-2 hard drives 3.0
-external disk drive that uses 3.0 and 2.0 connections
it's not working, my PC makes connection/disconnection sounds frantically when these 5 devices are plugged in, it seems like there just isn't enough power for all the USB ports,
if I add my mobile (Sony Xperia Z3 which crashes Windows Explorer when I connect it), my iPad 2, and my 2 desk lamps that can be plugged in via USB 2.0, the computer has no chance of being powered enough to run all that, even though the case has a lot of USB ports, finally one of my 2 screens, an iiyama prolite gb2488hsu-b1, offers 2 USB ports at the back but I will never be able to use them because the power supply for the USB ports just won't allow everything to run.
I've searched a lot on French and English forums but I haven't found anything that seemed to answer this question, and finally I currently have only one GTX970 graphics card for my 2 screens and I was wondering if I could plug in my old GTX650 to run the second screen independently from the first, as I often play while having something else on my second screen, I would like to have both screens on 2 different graphics cards.
Thank you very much for your help because I got Battlefield 1 yesterday and I can't install it if I can't get both my external hard drives and my disc drive working at the same time. I had the same problem with Mafia 3 recently and it’s frustrating to be penalized like this just because I have some of my games in physical version..
Configuration: Windows / Chrome 54.0.2840.71
4 réponses
jeannets
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Hello,
It should be noted that USB ports are limited to around 500mA per port from the motherboard, in general. In the case of multiple USB ports mounted on a mini add-on card, it's often less... most laptops are below 500mA per port... that's normal.
In your case, there are still many connections to USB ports... It should also be noted that initially, USB ports were not designed to power peripherals, but only to exchange data... and nothing has changed since; it is the manufacturers who have made devices that could run on such little current (at least when they are new).
However, all these currents add up on the 5 volts of the PC, and the power supply unit is not always capable of providing it...
Few people worry about the current drawn by a USB accessory... It's a shame, as it is with any other device.
I believe that a desk lamp could be powered differently than by a USB port...
Let's say that the more the power supply is stressed, the less headroom it has to ensure its regulation... which is much more problematic if the processor has to suffer... because it is still the heart of the PC and the very reason for this regulation...
As for hard drives, it would be preferable for them to have their own power supply, especially multiple hard drives on the same PC...
Many 2.5" hard drives consume more than 500mA, even when new, and as they age, it worsens, consumption increases.
A hard drive has current variations depending on startups, head accesses, and fragmented files that increase accesses and head movements with transient peaks up to 2A, which cause micro-cuts on the 5V due to "Overload."
These spikes can result in a lost drive in full action or part of the data during reading or writing errors on the drive.
A lost drive or a corrupted file can easily crash the PC...
Your link doesn't work for me..?? It sends me to the "Driver Cloud" website.
The problem seems more related to an electricity lesson rather than computing... but the two are connected.
It should be noted that USB ports are limited to around 500mA per port from the motherboard, in general. In the case of multiple USB ports mounted on a mini add-on card, it's often less... most laptops are below 500mA per port... that's normal.
In your case, there are still many connections to USB ports... It should also be noted that initially, USB ports were not designed to power peripherals, but only to exchange data... and nothing has changed since; it is the manufacturers who have made devices that could run on such little current (at least when they are new).
However, all these currents add up on the 5 volts of the PC, and the power supply unit is not always capable of providing it...
Few people worry about the current drawn by a USB accessory... It's a shame, as it is with any other device.
I believe that a desk lamp could be powered differently than by a USB port...
Let's say that the more the power supply is stressed, the less headroom it has to ensure its regulation... which is much more problematic if the processor has to suffer... because it is still the heart of the PC and the very reason for this regulation...
As for hard drives, it would be preferable for them to have their own power supply, especially multiple hard drives on the same PC...
Many 2.5" hard drives consume more than 500mA, even when new, and as they age, it worsens, consumption increases.
A hard drive has current variations depending on startups, head accesses, and fragmented files that increase accesses and head movements with transient peaks up to 2A, which cause micro-cuts on the 5V due to "Overload."
These spikes can result in a lost drive in full action or part of the data during reading or writing errors on the drive.
A lost drive or a corrupted file can easily crash the PC...
Your link doesn't work for me..?? It sends me to the "Driver Cloud" website.
The problem seems more related to an electricity lesson rather than computing... but the two are connected.