USB Host Port...How handy....

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  • AlbertK
    Technician

    50+ Posts
    • Jul 2014
    • 90

    [Funny] USB Host Port...How handy....

    I was servicing a Kyocera ECOSYS M2535dn when the customer requested me to disable the auto power save function on the machine. Obviously I explained the power save function and its benefits but to my surprise the customer told me that nothing works after the machine enters the power save mode......Turned out that her cell phone charger connected to the USB host port located in the front of the machine did not work when the machine was in power save mode....lol......funny....I think so....
    The product may be brilliant and the salesperson proficient, but if the technician isn’t efficient, then the story will end there.
  • mikadonovan
    Senior Tech

    Site Contributor
    2,500+ Posts
    • May 2008
    • 2936

    #2
    Re: USB Host Port...How handy....

    That's dang funny. You did tell her that was a bad idea, I guess....
    NEVER ASSUME ANYTHING

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    • emujo
      Field Supervisor

      2,500+ Posts
      • Jun 2009
      • 3009

      #3
      Re: USB Host Port...How handy....

      Ran into something similar with USB powered hubs, seems not all of the USB ports on the KM devices are capable of powering devices like this. Thought it was pretty strange as USB is a standard..Why would one port power the hub and not the other. No Biggie though. Emujo
      If you don't see your question answered in the forum, please don't think it's OK to PM me for a personal reply...I do not give out firmware and/or manuals.

      Comment

      • SargeNZ
        Trusted Tech

        250+ Posts
        • May 2012
        • 263

        #4
        Re: USB Host Port...How handy....

        There's something in the USB standard that requires a device to negotiate with the USB host if it want to draw over a certain amount of power.

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        • KenB
          Geek Extraordinaire

          2,500+ Posts
          • Dec 2007
          • 3946

          #5
          Re: USB Host Port...How handy....

          Standards or no, some USB devices pull a lot more power than others, and not all ports respond equally.

          I have a Western Digital portable HDD I bought some years back. Most PCs power it with no issues, but it has a power jack, as the manual said, "just in case more power was needed."'

          I have another (much older, company provided), that actually has two USB plugs coming off of one cable, in the event one port doesn't provide enough juice.
          “I think you should treat good friends like a fine wine. That’s why I keep mine locked up in the basement.” - Tim Hawkins

          Comment

          • Lagonda
            Service Manager

            Site Contributor
            1,000+ Posts
            • Aug 2008
            • 1650

            #6
            Re: USB Host Port...How handy....

            I use the USB port to plug my portable electronic crystal ball in. I can then tell customers instantly when the new parts will be in stock and when their machine will be back up and running.





            20141010_141928.jpg
            At least 50% of IT is a solution looking for a problem.

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            • Hansoon
              Field Supervisor

              Site Contributor
              2,500+ Posts
              • Sep 2007
              • 3293

              #7
              Re: USB Host Port...How handy....

              "I want one too"

              Hans
              " Sent from my Intel 80286 using MS-DOS 2.0 "

              Comment

              • igi
                Service Manager

                1,000+ Posts
                • Apr 2009
                • 1507

                #8
                Re: USB Host Port...How handy....

                Originally posted by Hansoon
                "I want one too"

                Hans
                it will not work on

                Intel i286 using MS-DOS 2.0

                Comment

                • NeoMatrix
                  Senior Tech.

                  2,500+ Posts
                  • Nov 2010
                  • 3514

                  #9
                  Re: USB Host Port...How handy....

                  Originally posted by igi
                  it will not work on

                  Intel i286 using MS-DOS 2.0

                  Might be time to upgrade igi....

                  I'd hang onto that old system though, it's soon to be worth thousands of dollars as an antique collection....
                  Inauguration to the "AI cancel-culture" fraternity 1997...
                  •••••• •••[§]• |N | € | o | M | Δ | t | π | ¡ | x | •[§]••• ••••••

                  Comment

                  • AlbertK
                    Technician

                    50+ Posts
                    • Jul 2014
                    • 90

                    #10
                    Re: USB Host Port...How handy....

                    "Standards or no, some USB devices pull a lot more power than others, and not all ports respond equally.
                    I have a Western Digital portable HDD..."

                    I have the same problem with Samsung home theatre system. The USB port provided in the front of the system will read memory sticks with ease but refuses to read an external HDD.....probably a power or memory to big issue ?
                    The product may be brilliant and the salesperson proficient, but if the technician isn’t efficient, then the story will end there.

                    Comment

                    • NeoMatrix
                      Senior Tech.

                      2,500+ Posts
                      • Nov 2010
                      • 3514

                      #11
                      Re: USB Host Port...How handy....

                      Originally posted by AlbertK
                      "Standards or no, some USB devices pull a lot more power than others, and not all ports respond equally.
                      I have a Western Digital portable HDD..."

                      I have the same problem with Samsung home theatre system. The USB port provided in the front of the system will read memory sticks with ease but refuses to read an external HDD.....probably a power or memory to big issue ?
                      What sort of external hdd, SATA, IDE ,SCSI ?

                      They're 99% SATA now in anycase. I beleive higher 7200rpm would take a bit more power. Probably the reason they use an external power supply.
                      Inauguration to the "AI cancel-culture" fraternity 1997...
                      •••••• •••[§]• |N | € | o | M | Δ | t | π | ¡ | x | •[§]••• ••••••

                      Comment

                      • Iowatech
                        Not a service manager

                        2,500+ Posts
                        • Dec 2009
                        • 3933

                        #12
                        Re: USB Host Port...How handy....

                        Originally posted by igi
                        it will not work on

                        Intel i286 using MS-DOS 2.0

                        I had an external hard drive like that for a while. It had one USB cable for data, and another one for power.
                        The thing would crash my XP computer if I didn't hook up both cables when the machine was off.
                        I guess newer USB units aren't always as backwards compatible with USB 1 ports as they say.

                        Comment

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