sil_ver 16:50 23 Jun 2004

Since fitting this board I've rapidly come to the conclusion that it's slightly lacking in the USB power supply department. I have a webcam, card reader, printer and Powered hub connected more or less permanently, the BB modem is plugged into the hub. If I plug another printer in to the mainboard the USB Modem will drop connection and remain dead until I unplug the hub and plug it in again. To try and get round the problem I am thinking of buying a PCI USB card but am unsure whether it has it's own USB power supply or if it still needs to use the mainboard USB supply. Any input appreciated.

  €dstowe 16:54 23 Jun 2004

Best not to use a modem or a printer via a hub.

Put your less demanding things on the hub to allow the modem to get all the power it wants.

  sil_ver 17:05 23 Jun 2004

The manual for the modem Speedtouch 330 says to use a hub. I tried to use it off the mobo of a previous mobo and just kept getting dropped conns until I used the hub

  lacker 17:21 23 Jun 2004

I also run this MOBO which has 4 USB2 ports built in.I have added a 4port PCI expansion card'and all 8 ports operate without any problems.I agree with Edstow do not operate a printer or modem through a hub,powered or otherwise.From experience I can tell you it will cause grief.

  sil_ver 17:25 23 Jun 2004

So, regarding my original question, does a PCI USB card run independant of the mobo USB power supply

  lacker 17:32 23 Jun 2004

Hi sil_ver,
I am no expert on electronics but I guess they would be separate.The original 4 are on the MOBO circuitry direct.The PCI card has it's own circuitry.All I can say mate,is it works 'tickety boo' on my mobo which is the same as yours.

  Bowsprit 17:42 23 Jun 2004

I have same setup on same board plus scanner and no problems for over a year.I also have a four port PCI USB card with four ports on front panel and this draws power from mb.I think your problem could be hot plugging your other printer.

  sil_ver 11:34 28 Jun 2004

Thought I'd give the idea of plugging less demanding devices on the hub and printers and modem on mobo. I now only hot plug the scanner to mobo and things seem to have settled down. So, thanks everybody for your input.

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