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- Power sockets in USB2 Cardbus cards
March 19, 2006, 5:57 pm
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I notice some 2-port USB 2 Cardbus/PCMCIA cards have power in sockets
while some dont.
Is it because the better chipsets are more efficient so can power the
ports without external help or is it that the ones without the power
socket cant provide much power to the devices.
I plan to run an iPod and external HDD off the two ports - I only want
a two port card for space reasons and would prefer not to have the
external PSU unless absolutely neccesary.
Re: Power sockets in USB2 Cardbus cards
yes, that's it- has nothing to do with the chipset used.
You'll have to determine how much current these devices use.
If the external drive is a full sized (3.5"), it is
advisable to use an external power supply. If smaller, it
still wouldn't be a bad idea. The devices should spec
their current usage, check the manuals (or often label on
the hard drive itself).
Do you not have AC power available? I ask because it would
not seem to make much sense running a device such as an
IPOD, that might get as long a battery runtime off it's own
battery pack, off of a laptop battery pack which might then
be the weakest link, ever-shorter runtime.