Having a computer act as a virtual USB slave device rather than as a host

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP












5















I have a use case where I want a virtual hard disk (particularly, on a freeNAS installation) to act as a USB mass storage peripheral for an external device, such as a phone or video game console. My idea is to do away with all the USB storage devices in my setup and move to virtualizing them as part of my NAS and have them be a painless part of my regular backup routine.



I realize that USB is not a symmetric setup, so I'd need a slave port on my NAS. I also realize this is something done on the actual USB controller card, so there's no real way to just "use" a USB port as a slave port.



My question is, is there any sort of method of emulation or conversion, through hardware, software, or some combination thereof, to achieve this functionality? It seems like I can use the linux usb-gadget api in mass storage mode if I can get a slave port to work. However, I can't seem to find any sort of expansion card with USB slave or USB-OTG support, and I know of no other hardware solutions that I could use in the middle of this setup.



Does anyone have any pointers?



Edit: Would a device like this work?



http://www1.plxtech.com/products/usbcontrollers/usb3382










share|improve this question




























    5















    I have a use case where I want a virtual hard disk (particularly, on a freeNAS installation) to act as a USB mass storage peripheral for an external device, such as a phone or video game console. My idea is to do away with all the USB storage devices in my setup and move to virtualizing them as part of my NAS and have them be a painless part of my regular backup routine.



    I realize that USB is not a symmetric setup, so I'd need a slave port on my NAS. I also realize this is something done on the actual USB controller card, so there's no real way to just "use" a USB port as a slave port.



    My question is, is there any sort of method of emulation or conversion, through hardware, software, or some combination thereof, to achieve this functionality? It seems like I can use the linux usb-gadget api in mass storage mode if I can get a slave port to work. However, I can't seem to find any sort of expansion card with USB slave or USB-OTG support, and I know of no other hardware solutions that I could use in the middle of this setup.



    Does anyone have any pointers?



    Edit: Would a device like this work?



    http://www1.plxtech.com/products/usbcontrollers/usb3382










    share|improve this question


























      5












      5








      5








      I have a use case where I want a virtual hard disk (particularly, on a freeNAS installation) to act as a USB mass storage peripheral for an external device, such as a phone or video game console. My idea is to do away with all the USB storage devices in my setup and move to virtualizing them as part of my NAS and have them be a painless part of my regular backup routine.



      I realize that USB is not a symmetric setup, so I'd need a slave port on my NAS. I also realize this is something done on the actual USB controller card, so there's no real way to just "use" a USB port as a slave port.



      My question is, is there any sort of method of emulation or conversion, through hardware, software, or some combination thereof, to achieve this functionality? It seems like I can use the linux usb-gadget api in mass storage mode if I can get a slave port to work. However, I can't seem to find any sort of expansion card with USB slave or USB-OTG support, and I know of no other hardware solutions that I could use in the middle of this setup.



      Does anyone have any pointers?



      Edit: Would a device like this work?



      http://www1.plxtech.com/products/usbcontrollers/usb3382










      share|improve this question
















      I have a use case where I want a virtual hard disk (particularly, on a freeNAS installation) to act as a USB mass storage peripheral for an external device, such as a phone or video game console. My idea is to do away with all the USB storage devices in my setup and move to virtualizing them as part of my NAS and have them be a painless part of my regular backup routine.



      I realize that USB is not a symmetric setup, so I'd need a slave port on my NAS. I also realize this is something done on the actual USB controller card, so there's no real way to just "use" a USB port as a slave port.



      My question is, is there any sort of method of emulation or conversion, through hardware, software, or some combination thereof, to achieve this functionality? It seems like I can use the linux usb-gadget api in mass storage mode if I can get a slave port to work. However, I can't seem to find any sort of expansion card with USB slave or USB-OTG support, and I know of no other hardware solutions that I could use in the middle of this setup.



      Does anyone have any pointers?



      Edit: Would a device like this work?



      http://www1.plxtech.com/products/usbcontrollers/usb3382







      usb






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Jan 13 at 22:03









      Rui F Ribeiro

      39.7k1479132




      39.7k1479132










      asked Nov 26 '15 at 17:59









      AJ QuadAJ Quad

      262




      262




















          0






          active

          oldest

          votes











          Your Answer








          StackExchange.ready(function()
          var channelOptions =
          tags: "".split(" "),
          id: "106"
          ;
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function()
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled)
          StackExchange.using("snippets", function()
          createEditor();
          );

          else
          createEditor();

          );

          function createEditor()
          StackExchange.prepareEditor(
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: false,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: null,
          bindNavPrevention: true,
          postfix: "",
          imageUploader:
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          ,
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          );



          );













          draft saved

          draft discarded


















          StackExchange.ready(
          function ()
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f245716%2fhaving-a-computer-act-as-a-virtual-usb-slave-device-rather-than-as-a-host%23new-answer', 'question_page');

          );

          Post as a guest















          Required, but never shown

























          0






          active

          oldest

          votes








          0






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes















          draft saved

          draft discarded
















































          Thanks for contributing an answer to Unix & Linux Stack Exchange!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid


          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.

          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function ()
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f245716%2fhaving-a-computer-act-as-a-virtual-usb-slave-device-rather-than-as-a-host%23new-answer', 'question_page');

          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown






          Popular posts from this blog

          How to check contact read email or not when send email to Individual?

          Displaying single band from multi-band raster using QGIS

          How many registers does an x86_64 CPU actually have?