+ Post New Thread
Results 1 to 5 of 5
How do you do....it? Thread, usb hubs and "piggy-backing" in Technical; Our PE department have a number of electronic dance mats which all need to be linked to a laptop via ...
  1. #1

    Join Date
    Apr 2006
    Location
    UK
    Posts
    939
    Thank Post
    39
    Thanked 70 Times in 54 Posts
    Rep Power
    29

    usb hubs and "piggy-backing"

    Our PE department have a number of electronic dance mats which all need to be linked to a laptop via a usb hub. They have around 30 mats so we need a usb hub with 30 ports.

    We dont seem to be able to find a hub with 30 ports, firstly does anyone know if a 30 port hub is possible/available. Secondly could we buy say 4 8 port hubs and piggy back them to add support for more connections?

  2. #2

    Geoff's Avatar
    Join Date
    Jun 2005
    Location
    Fylde, Lancs, UK.
    Posts
    11,803
    Thank Post
    110
    Thanked 583 Times in 504 Posts
    Blog Entries
    1
    Rep Power
    224

    Re: usb hubs and "piggy-backing"

    You should only connect 5 tiers of USB hubs together. A tier is defined by the number of hubs a device's signal must pass through before it reaches the host.

    For example, using a 4-port USB hub, you could connect a theoretical maximum of 341 hubs in five tiers. This would leave you with 1024 ports to connect USB devices.

    However Windows XP has a hardcoded limitation of 127 USB devices. If you want more, you'll need to use a real OS like Linux or Mac OSX.

  3. #3

    Join Date
    Jun 2005
    Posts
    223
    Thank Post
    6
    Thanked 8 Times in 8 Posts
    Rep Power
    30

    Re: usb hubs and "piggy-backing"

    In theory you can daisy-chain up 128 USB devices IIRC. In practice I would make sure you get powered hubs for something like this as you are likely to run into voltage problems otherwise.


  4. #4

    Join Date
    Jun 2005
    Posts
    223
    Thank Post
    6
    Thanked 8 Times in 8 Posts
    Rep Power
    30

    Re: usb hubs and "piggy-backing"

    Damn Geoff can create those Linux advertisements quicker than a mere mortal can compose a reply!

  5. #5

    Join Date
    Nov 2005
    Location
    Middlesbrough
    Posts
    402
    Thank Post
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0

    Re: usb hubs and "piggy-backing"

    As Geoff said, no more than 5 tiers, just buy a load of POWERED USB hubs and it *should* work.

SHARE:
+ Post New Thread

Similar Threads

  1. Replies: 31
    Last Post: 30th June 2008, 10:03 AM
  2. Replies: 7
    Last Post: 19th June 2007, 08:34 AM
  3. Replies: 6
    Last Post: 28th September 2006, 07:06 PM
  4. Replies: 2
    Last Post: 13th June 2006, 09:22 PM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •