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Is it possible to power a powered usb hub off of computer power supply?
Popcorrin:
I was thinking about powering my usb hub from a 5v line of my power supply. The hub requires 4 amps at 5 volts. I couldn't think of any issues with this but I wanted to check to be sure.
Turnarcades:
If i's a USB 2.0 hub isn't it already drawing 5v from the USB port? Not sure if you'd be able to tap further power from the 5v line.
whammoed:
--- Quote from: Popcorrin on August 21, 2008, 04:47:17 pm ---I was thinking about powering my usb hub from a 5v line of my power supply. The hub requires 4 amps at 5 volts. I couldn't think of any issues with this but I wanted to check to be sure.
--- End quote ---
I don't see why not if your power supply is rated for it (although most usb devices won't draw the entire 500 milliamps the port is capable of anyway)
Is it an 8 port hub? Not sure why it would need 4 amps otherwise...
Popcorrin:
I guess I shouldn't say it requires 4 amps, that's just what the original power transformer supplied. It is a 7 port hub and I am going to be running a couple of led wiz's off of it along with a 5 more usb devices so it will be pulling some decent current.
Franco B:
If you are running two LED WIZ's as well as 5 other devices from one USB port (via the 7 port hub) you will more than likely exceed the 500 mA.
All you need to do is feed the LED Wiz'z 5v from your PSU and they will take power from that which will free up the USBs power for the other devices.