Given that all of them are all powered hubs so power won’t be the issue and you have enough space to put them. How much will it impact performance, latency or other things I don’t know about? Or it will straight up kill the port if there are too many hubs?

  • @[email protected]
    cake
    link
    fedilink
    9210 months ago

    5 hubs deep and 127 devices per usb controller (not port)

    To confuse this more many usb3 or newer controllers won’t handle more than 32 devices.

    Now add to that most 7 port usb hubs are actually 2x 4 port hubs.

    You may be starting to see why it is so hard to definitively say if a certain usb setup will work or not without testing the actual hardware.

    Side note, a lot of usb devices even count as 2 devices due to hw encryption chips, like wd external hard drives.

  • @[email protected]
    link
    fedilink
    7810 months ago

    Theoretically, there’s a 127 device max.

    In practice, it depends on each vendor’s hardware implementation.

  • @bladerunnerspider
    link
    4110 months ago

    There is an LTT video on this subject if you care to look for it.

  • @[email protected]
    link
    fedilink
    2110 months ago

    Forget daisy-chaining. I gave up on finding a single decent USB hub, let alone connecting them together.

    • ares35
      link
      fedilink
      6
      edit-2
      10 months ago

      i have a number of clients with anker powered usb3 hubs. no issues from any of them, and one of those is my… uh… ‘most difficult’ one. if he had a problem, i would know about it

      • @seaQueue
        link
        310 months ago

        +1, powered USB3 hubs have worked fine for me as well. Keep them away from any 2.4GHz transceivers though, I’ve had issues with RF noise from them wrecking wireless mouse/keyboard signals.

        • @[email protected]
          link
          fedilink
          310 months ago

          Huh, that’s interesting. That might be exactly the cause of the issue I was having with them (plugging in 2.4Ghz keyboards and mice into them).

          • @seaQueue
            link
            210 months ago

            I worked around that by plugging in a usb2 extension cable that came with something I bought and placing the 2.4ghz transceiver maybe 2-3’ away from the hub. Same deal with the mouse and keyboard, they need to be a reasonable distance (some # of inches) away from USB 3 signals.

            • @[email protected]
              link
              fedilink
              110 months ago

              Gunna have to experiment with this, however my PC is set up next to our sofa so the distances might not work out.

              • @seaQueue
                link
                210 months ago

                I had a hub on my desk next to my monitor so I just ran the extension up the back of the monitor and fixed it in place near the top edge. That was enough distance (maybe 18-20in now that I think about it) to resolve the interference. If you play around a bit you might find that even 10in is enough distance. Try a USB 2 extension cable too, that’ll keep v3 signalling at a distance.

  • aname
    link
    fedilink
    2010 months ago

    Hubs can only go 5 levels deep daisy chained

    • @fuckwit_mcbumcrumble
      link
      2110 months ago

      Windows will even notify you of exactly this limitation.

      From the thunderbolt port on my laptop, to my dock, to my monitor, to my big ass hub was 1 too many hops. Obviously somewhere along there were some hubs that weren’t obvious to the naked eye.

      • Shurimal
        link
        fedilink
        1610 months ago

        Obviously somewhere along there were some hubs that weren’t obvious to the naked eye.

        Probably the port on your laptop was on a hub built onto the mobo. If my understanding is right that’s how USB ports usually are connected: controller->hub->ports. If you open up device manager and go to USB controllers you’ll see several root hubs and hubs even when you have no external hubs or docks connected.

      • aname
        link
        fedilink
        510 months ago

        Yes, of the multiport hubs have a subhubs already

  • @JTskulk
    link
    English
    510 months ago

    I don’t know about Daisy chaining them, but I found that the limit for usb3 is 16 devices. I was using 2 hubs and the integrated ports at the time.

    • Hjalmar
      link
      fedilink
      510 months ago

      According to some other answer here you could be able to have 32 devices but some devices register as two different devices, therefore you can only have 16