Can TC power an external HDD?

I'm buying a new external hard drive, and would like to buy one that's powered via the USB connection, not one with its own AC power adapter.
a) Is the Time Capsule able to power an external HDD through the USB port?
b) If yes, are there any limitations to how big a size or how fast (rpm) the disc can be before it's too much for the TC to handle?
Thanks.

erlendlh wrote:
I'm buying a new external hard drive, and would like to buy one that's powered via the USB connection, not one with its own AC power adapter.
a) Is the Time Capsule able to power an external HDD through the USB port?
Yes. Apple's technical specs for the Time Capsule don't mention current capacity of the USB port, but I have an external drive connected to my Time Capsule. On a PowerBook G4 that same drive required a "Y" USB cable to provide the drive enough power.
b) If yes, are there any limitations to how big a size or how fast (rpm) the disc can be before it's too much for the TC to handle?
I wouldn't expect size or speed to be a problem.

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