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basslab
EVDO Newbie
Joined: 16 May 2005
Posts: 6
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 Posted: Fri Dec 15, 2006 12:52 pm Post subject: U720 with USB Hub |
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Hi,
Has anyone tried using the U720 with a USB hub as my laptop only has 2 USB ports? I would need 2 for the U720 and 1 to tunnel in to work.
Thanks for your help. |
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Scott
EVDO Junkie
Joined: 18 Jul 2005
Posts: 530
Location: Central Coast of California
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| Posted: Fri Dec 15, 2006 2:30 pm Post subject: |
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That is a very good question.
For those of you "plug and take cover" types... be careful that any USB hubs or power supplies with USB type A receptacles will not go beyond the power limits of the Novatel Ovation U720.
The U720 is meant to be plugged into a single USB port rated at 5v/500mA. Use of the extender/DC sum cable is intended to raise power to approximately 5v/1000mA. Attempting to 'goose' the power above that may fry your new little toy!  |
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xenophon
EVDO Addict
Joined: 30 Aug 2005
Posts: 2001
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| Posted: Fri Dec 15, 2006 2:33 pm Post subject: |
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| Also be sure to use a USB hub that has its own power supply. Some do not. I've tried one and it fried the primary USB port the hub was plugged into. Ugly. |
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Scott
EVDO Junkie
Joined: 18 Jul 2005
Posts: 530
Location: Central Coast of California
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| Posted: Fri Dec 15, 2006 2:50 pm Post subject: |
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| xenophon wrote: | | ... be sure to use a USB hub that has its own power supply... |
Which could be a bad thing. Cheap power supplies may leak noise into the U720's radio, lowering signal-to-noise, and lowering performance.
This is a whole new thing folks, so until different methods of plugging the U720 in are experienced and shared here, we're in the dark.
So:
If you use another type of powered extender/DC sum cable, please post details of what you used, what type of computer you have, which of the USB ports you're using, what gains/losses you experienced, etc.
If you use some type of hub, post details of the model number and similar to above, what gains/losses you see. |
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