Self-powered USB hub and power supply adapter ampere capacity

Posted by galacticninja on Super User See other posts from Super User or by galacticninja
Published on 2010-03-14T06:43:21Z Indexed on 2010/03/14 6:45 UTC
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usb

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usb-drive

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usb-powered

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usb-hub

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usb-port

I am looking for a power supply adapter for my USB Hub so it can support at least 2 bus-powered external hard drives. The hub's rating is 5 volts, 2 amperes.

I would like to know if it would be OK to buy a power supply adapter rated at less than 2A. I've been looking for power supply adapters and the ones that do support 2A are more expensive (more expensive than the USB hub itself) compared to those that support less than 2A.

Will power supply adapter that supports less than 2A (~1-1.5A) work fine to support two external hard drives?

The external hard drives are both bus-powered Western Digital My Passport Essentials 250 GB. The OS is Windows XP SP3.

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