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Peripherals forum: USB 2.0 Card for Notebook A/C power requirement

by: RobA October 24, 2004 8:33 PM PDT

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USB 2.0 Card for Notebook A/C power requirement

by RobA - 10/24/04 8:33 PM

I am looking for a USB 2.0 / Firewire PCMCIA card and noticed some come with an A/C adapter and others do not. Is this required or do some require external power and others do not ? I was looking at the Adaptec USB 2.0 / Firewire card for my notebook and noticed it is slightly more expensive than other brands but does not come with the A/C Adapter (So I am wondering if it is really required) Any help would be appreciated.


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Re: USB 2.0 Card for Notebook A/C power requirement

by Willy - 10/25/04 8:26 AM

In Reply to: USB 2.0 Card for Notebook A/C power requirement by RobA

USB needs power from some source and if only through the USB port, then that's the laptop battery if not AC power(laptop itself), thus may drain the batteries even sooner. Having outside AC power for USB devices is good for most basic need, as close as a AC outlet. If you're real mobile then a non-AC powered USB device/port makes more sense. Buy what suits your needs. However, AC powered USB devices tend to be stable and may not be effected from battery power drain, so again take that into consideration.

good luck -----Willy happy


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