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Author Topic: Portable usb hard drive problem  (Read 793 times)
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max
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« on: June 27, 2010, 09:52:15 09:52 »

Hi Friends,

I have a pci 4 ports usb card in my pc, when I connect two portable
hard drives, each have two usb cables the drives did not work, while
I can use one drive at a time.
the 4 usb ports does not supply the same current ie 500ma per port?
how to use two drives at a time?

Regards
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oldvan
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« Reply #1 on: June 27, 2010, 10:17:11 10:17 »

A)  Use an external power supply for at least one of the drives.

or

B) Connect at least one of the drives to the computer through a powered hub.
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« Reply #2 on: June 27, 2010, 03:47:15 15:47 »

The problem is the pci card can only power 500ma total you could steal the power for one of the drives from a motherboard usb port, or from the keyboard / mouse connector, as most people use a usb mouse.
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