why printer does not work with usb 7 port hub

Seagate hard drive / St3331ac-m
December 22, 2010 at 11:44:12
Specs: Windows XP, 1.25B\GB
I have a 7 port usb hub that seems to work with a limited number of devices already. But this wonderful technology falls short when my Canon IP2702 printer is connected to it. Also, the same problem is evident whenever I plug in my MagicJack Internet Phone.

Pressing the Print command in a Word document issues the following message:

Port: USB001
The printer is offline.
Check the printer cable.
What is needed to overcome this glitch and be able to print as needed.
However, I can run the MagicJack in another computer and still be able to print my documents as needed.

Is there someone out there with the knowledge to rescue me from this inconvenience, and if so, would you kindly pass along your input as I would very much appreciate any help you may have?


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December 22, 2010 at 11:47:00
Is the USB hub AC powered?

USB ports only supply a finite amount of power per port.

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December 22, 2010 at 12:04:04
To: otherhill:

Sorry, I forgot to mention that this product is powered through black box connected to an electrical outlet. There is a cable running from the black box right into one of the seven outlets on the USB connectors.

I hope this info is what you're specifying.


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December 22, 2010 at 13:03:27
How many other devices are connected to the hub? Does the printer work if connected without any hub? Is another device using the other paired port on your motherboard?

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December 22, 2010 at 13:45:52
To: Wizard Fred:

There are three device connected to this hub, namely:

1. MagicJack Internet Phone
2. Canon IP2702 Printer
3. Prolific3 Cable for file transfer from pc to pc/Windows Easy Transfer utility
Answer: Without hub, printer works 100%.
Another paired device using paired port is beyond my pay grade. I am lost on this one. I would like to get more info on usb in general. It's a subject that I am not too familiar with.

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December 22, 2010 at 13:59:10
USB ports are usually driven by chips that are like two port hubs. So a load on one reduces the ability of the other. Since it works without the hub I would suspect signal loss in the hub. Try maybe a 4 port hub?

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December 22, 2010 at 14:16:48
Dear fred:

From my understanding of this last post, I'm assume you're suggesting the purchase of another hub with a maximum of four ports. If so, that's no problem.

Of course, Ishould be able to work around this problem by simply placing the usb cable into another pc and using PCLinq3 utility and copy/move any file to the designated location.
The only problem I see with this option is like letting the thief get away with a "high crime" without bringing him to justice.
Nevertheless, I will take your advise under consideration asap.
Thanks much for your time and consideration, and have a merry, merry Christmas and a happy 2011!


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December 22, 2010 at 15:00:43
Printers should always be on the on-board USB Port, otherwise loose communication.

The 7 Port Hub will need to be powered, even 4 Port Hubs are bettered powered.

The max current on USB Port is 5v 400ma, hence why you need a powered hub..

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December 22, 2010 at 16:27:49
I think you will find this a shortcoming of using an external hub. I have two printers, a Panasonic Laser and a HP Deskjet Inkjet/Sannner.

The HP works fines connected through the hub, the Panasonic doesn't and insists on having its own connection directly to the computer.

Something you will have t live with as it is probably down the the way the device communicates with the USB


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