Strange issue with passthrough on my computer

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ProStreet

Super Member
ECF Veteran
Dec 30, 2008
366
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Montgomery county Maryland
I have a VERY high end computer. I went to take a drag and got no vapor. Started messing around and noticed the lights on my keyboard go out every time I pressed the button. I rebooted and all was fine again. Very strange.


My system consists of

Intel Core 2 Quad Q9550 clocked at 4.0Ghz
Gigabyte UD3P "ultra durable" motherboard
ATI HD 4890
2 WD SATA2 160GB drives in RAID 0
X-Fi platinum
600 watt seasonic power supply
 

windex

Full Member
Jun 26, 2009
36
0
WI, USA
AFAIK, the passthrough's are not a real USB 2.0 device and they don't properly tell the USB controller how much power they require / verify they can get it.

I have worked in IT for 12 years now and I have seen a lot of screwy ****. It's possible for USB devices without substantial electrical logic to destroy motherboards given the right set of conditions - if I used a USB passthrough I'd probably pick up Kensington Power Pack or a USB 2.0-compatible wall adapter, since my Mac Pro is not intended to act as a hookah by the manufacturer, you know?

:)
 

CaSHMeRe

Vaping Master
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Jun 12, 2008
7,938
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Windex is Correct ... There is no *chip* within the PT to tell the PC what the required power it needs ... Therefore ... The PS USB PT pulls as much power as the PC will give.

This is the reason why some people have PC's that give a *Warning -- Overload on USB Slot 1/2/3" I have 1 PC's that does this (old XP Dell -- about a year old) and a newer Emachine (Vista) that does not.

The warning gets a little annoying, however, I have yet to see an actual PC damaged due to our PT's. But, like I tell everyone ... Use at your own risk ... I can't guarantee what will or will not work with the USB PT. Just know ... If you feed the PT the power ... It will take everything you give it :)
 

ProStreet

Super Member
ECF Veteran
Dec 30, 2008
366
13
46
Montgomery county Maryland
AFAIK, the passthrough's are not a real USB 2.0 device and they don't properly tell the USB controller how much power they require / verify they can get it.

I have worked in IT for 12 years now and I have seen a lot of screwy ****. It's possible for USB devices without substantial electrical logic to destroy motherboards given the right set of conditions - if I used a USB passthrough I'd probably pick up Kensington Power Pack or a USB 2.0-compatible wall adapter, since my Mac Pro is not intended to act as a hookah by the manufacturer, you know?

:)


HAHA I know what you mean. Speaking of IT everybody I know wants me to go back to school to try and get an IT job because I am very good with computers and not to bad with networks. My wife is a sales person for NACR which is an Avaya platinum business partner and more than likely I could easily walk into a good IT job if I wanted to. Computers are a hobby/passion and I think being an IT would make me hate them and the idiots that use them. :lol:

I have a wall outlet right next to me so I may end up getting a wall adaptor. I wonder if that would make it vape stronger? I cant see how it could possibly get any better!
 

windex

Full Member
Jun 26, 2009
36
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WI, USA
Computers are a hobby/passion and I think being an IT would make me hate them and the idiots that use them. :lol:

I am a public servant that works for a federal government data center.

I came from the private sector. The public sector, is, uh, interesting. Your concerns do not fall on deaf ears, imagine when your .. end users .. are at the secretary-level management layer for departments and bureaus. :)

:)
 

tweekmonster

New Member
Apr 2, 2009
3
0
This problem will happen whenever you hook up a USB device, usually designed for charging a device, or generating heat in this instance.

If you've connected the passthrough to your keyboard, you'll more than likely have this problem. The keyboard is drawing power itself being always on with the lights and all. When you attach a device whose sole purpose is to draw power, you're adding to the draw on the single USB port your keyboard is attached to.

Your best bet for not having the power overdraw problem is to use a USB port that's directly connected to the motherboard. These will almost always be attached to the back of the PC.

A lot of new PCs have USB ports on the front, but they tend to be subject to the same problem if you have fancy pants lights or fans near the front of the case, since I've seen some designs draw power from the front USB wiring to light them up.

Another issue for this is a bridge (bare wire touching the inside of the case or another bare wire, etc.) because of a loose wire. If you're still having problems with over draw, I'd suggest opening up the pass through to make sure the soldering isn't touching the inside of the case.
 

CaSHMeRe

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Jun 12, 2008
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Another issue for this is a bridge (bare wire touching the inside of the case or another bare wire, etc.) because of a loose wire. If you're still having problems with over draw, I'd suggest opening up the pass through to make sure the soldering isn't touching the inside of the case.

The PS USB PT ground through the body of the Passthrough itself. If the Hott Wire were touching the tube, it would short, therefore rendering the PT useless, not the computer :)
 

tweekmonster

New Member
Apr 2, 2009
3
0
The PS USB PT ground through the body of the Passthrough itself. If the Hott Wire were touching the tube, it would short, therefore rendering the PT useless, not the computer :)

It has actually happened to me with the USB PT from PS. ;) It didn't fry anything, I just got a message about overdraw. My computer cut off power from the USB port before any damage was done.

I opened it up and put a little bit of electrical tape over the soldered connections. Working like a champ now :)
 

Torbleau

Full Member
ECF Veteran
Nov 20, 2008
32
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Hmmm car battery + home made resistor less usb adapter 8-o

Hide it behind my sub. Oh lordy i dont think my throat or my atomizers would like that to much. But it makes me wonder...........

Funny you should mention that. I have a Ford Escape with a USB port (for playing music). I can't wait to get my PT and give that a whirl! I've used it with my old PT's, and it worked great. Nice for long road trips. I'm heading to Canada next week, and am hoping to have it by then. If not, I just ordered some spare regular batteries to get me through.
 

CaSHMeRe

Vaping Master
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Jun 12, 2008
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USA
It has actually happened to me with the USB PT from PS. ;) It didn't fry anything, I just got a message about overdraw. My computer cut off power from the USB port before any damage was done.

I opened it up and put a little bit of electrical tape over the soldered connections. Working like a champ now :)

Hey Tweek ... Makes sense in your scenario, but goes against all electrical principles ... LOL ... Hey bud, whatever works !!!! :D
 

tweekmonster

New Member
Apr 2, 2009
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Hey Tweek ... Makes sense in your scenario, but goes against all electrical principles ... LOL ... Hey bud, whatever works !!!! :D

I'm on a Mac, so I don't know if it made a difference, but the the OS will cut off power to a port that is pulling too much power. That might've been what saved my PT.

I'd test it on a PC but I really don't want to break my PT for the sake of my curiosity since it's the only one I got (at the moment) :p
 

lorgain

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Jul 18, 2009
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Dickson TN
It never occurred to me to hook up directly to my PC's usb port just because they are in use by other more critical I/O devices. I don't have my USB passthru yet, but I planned on making my connection to a powered USB hub. That works out so much better for so many other peripherals anyway.

Has anyone tried this already? Powered USB hubs are really cheap, and certainly cheaper than hosing your motherboard. Since there is no I/O between the passthru and the motherboard chipset, there's really no reason to make that connection anyway.
 

WindyCityMike

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May 7, 2009
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OK
Powered USB hubs work, I use a 7 port one for all my passthroughs and chargers, much cheaper to risk a ten dollar hub than a much more expensive computer in my opinion.

It never occurred to me to hook up directly to my PC's usb port just because they are in use by other more critical I/O devices. I don't have my USB passthru yet, but I planned on making my connection to a powered USB hub. That works out so much better for so many other peripherals anyway.

Has anyone tried this already? Powered USB hubs are really cheap, and certainly cheaper than hosing your motherboard. Since there is no I/O between the passthru and the motherboard chipset, there's really no reason to make that connection anyway.
 

wegster

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  • May 10, 2009
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    HAHA I know what you mean. Speaking of IT everybody I know wants me to go back to school to try and get an IT job because I am very good with computers and not to bad with networks. My wife is a sales person for NACR which is an Avaya platinum business partner and more than likely I could easily walk into a good IT job if I wanted to. Computers are a hobby/passion and I think being an IT would make me hate them and the idiots that use them. :lol:

    Just stay away from the 'crash courses' and 'MCSE in a month', and get a real degree, if you have actual interest. Some of the above may land you an 'IT job' at a local library, but are pretty misleading in their 'placement stats,' BS they'll feed you on job market, and won't get you into an interview in any tech company. I've interviewed hundreds of people for IT, QA and sw engineering jobs, and been through thousands of resumes - the 'quick certs' all go in the trash unless they have actual *experience*. If it's a real (college) degree, that can at least get you in the door for an interview, then we find out 'did they do *anything* in school, or just the motions/can this person be taught?'

    I'm sure someone may disagree, but MCSEs without experience are a dime a dozen, and usually not worth that dime..in *tech* companies, at least. Go downstream for a government or local business job, and it becomes easier, though.

    On topic - many modern systems will detect overload conditions and offline the port, as Steve said.

    Your 'very high end system' really just boils down to the USB controller in use for the most part, and any additional sensors that may exist for USB voltage/current/load detection.
     
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    lorgain

    Senior Member
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    Jul 18, 2009
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    Dickson TN
    I'm sure someone may disagree, but MCSEs without experience are a dime a dozen, and usually not worth that dime..in *tech* companies, at least. Go downstream for a government or local business job, and it becomes easier, though.

    A very long time ago, I spent a small fortune to get certified as a Novell network administrator. When I got there, I think I was the only person that actually knew what the inside of a computer looked liked, and had actually set up networks before. I thought that all those poor folks in the class had just wasted $5000 and that I would be the only one walking out of there with a certification.

    Turned out that anyone that had $5000 and could sit through 5 days of classes was certified. I was so disgusted that I never even hung my cert on the wall. That was also when I realized that the way to go in the future would be Unix.
     

    wegster

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  • May 10, 2009
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    Turned out that anyone that had $5000 and could sit through 5 days of classes was certified. I was so disgusted that I never even hung my cert on the wall. That was also when I realized that the way to go in the future would be Unix.

    You got it. I used MCSE as an example people have heard of - I've been a Unix and Linux dev/sysadmin (+ some cisco and networking) forever, you can't pay me to touch MS nowadays. :)

    Cisco certs *are* actually worth something..just not so many are, and experience still helps.

    Back on topic again :D

    I did mange to get my macbook to offline the USB port a few times now with the PT..time to switch to an external powered hub for me..
    (was actually surprised it didn't gripe sooner..)
     

    framitz

    Moved On
    May 24, 2009
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    RSM, CA
    I also have a modern computer and have used the USB ports to vape, but I get more current and better vapor from my Kensington or a wall wart.

    Sounds like either a short in the PT or a flaky mother board. Possibly power supply, but more likely MB.

    I've accidentally shorted the 5v on a USB port and it protected it's self with no ill effects on the operation of the PC at all. It did scare the heck out of me when I realized what happened.

    I've been in IT since the 286 was state of the art.

    BTW raid 0 is a bad thing if you care about your data... lose one drive and all data goes with it.
     
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