Question about Avastor HDX-800 250 GB FireWire 400 (1394a) Hard Drive

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When i connect my avastor HD external hard drive to my imac it says: USB Over Current Notice. A USB device is currently drawing too much power. The hub to which it is attached to will be deactivated. How can i solve this problem?

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Attach it to the physical computer and it should fix it

Posted on Mar 17, 2011

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1 Answer

''Because a USB device was drawing too much power"


Try a powered USB hub. I have had this problem with a PC and even plugging two devices into a hub with its own power supply fails sometimes.

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What is "USB current protection ON" problem in


It looks like you connected an USB external harddisk that is drawing too much current. If the USB drive has an supplemental power supply, connect it, otherwise you may need another external drive.

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Mine keeps saying "USB Over


The power adapter could be faulty.
If you get an error message"Insufficient power to operate USB device" when you plug a USB deviceinto the computer's USB port, then this device is drawing excessive currentthat the USB port cannot supply. In case such as this, youneed to purchased a powered USB hub and connect this hub into the computer'sUSB port and then connect the USB device into this powered USB hub.

Apr 14, 2011 | Western Digital 250GB MyBook External USB...

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My Transcend 500GB is not working on my Dell Inspiron 1464 Windows 7 Home Basic But other USB devices like pendrive etc works fine. Also My Transcend 500 GB works fine on other machine has Windows 7...


The chances are that the portable drive is drawing more current fom the USB port then the port can supply. The current limitations on the USB ports are controlled electronically and if anything is connectedthat attempts to draw more power then the port can safely supply, the port is shut down.
You may have to use a USB power injector which you plug into the laptop and then plug the drive into that.

Mar 08, 2011 | Transcend StoreJet 25 Mobile 500GB USB 20...

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My laptop XP is not detecting Transcend StoreJet 25 External HD 500GB, but in desktop XP it is very well detecting and working. Pls let me know the solution for my laptop


USB devices draw electrical power through the USB cable.

Sometimes, the power-output from a USB port on a laptop is _less_ than that of a USB port on a desktop computer.

Hence, there are "Y" cables -- connect to two USB ports on your computer, and to the USB device at the other end, to draw more current.

Which manufacturer of laptop?
Which model-number?
Which Operating System?
Do other USB devices work when connected to the laptop's USB ports?

Nov 09, 2010 | Transcend StoreJet 2.5 (TS120GSJ25T) 120...

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USB External Harddisk Detection Problem


some people say that its because of not enough power . try inserting the hard disk in other usb slots ( at the back ). onlu usb slots at the back of my pc detects my hard disk

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1 Answer

USB over current notice


First of all, try it on a different machine - if it works OK on a desktop but not on a laptop, then you need to use an external 5V power supply.

You could also try and source a USB cable that has two USB plugs on it and connect the drive to two ports, but depending on the computer this may not help.

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1 Answer

Problem with installation of external dvd drive


I am also trying to get one of these drives working.  One "quirk" about this drive is that it actually uses two USB ports and a rechargeable battery when it is not connected to the AC adapter.  Why?  Because it draws a lot of current - each USB port on a laptop can supply a limited amount of current.  Using two USB ports allows the drive to draw the amount of current it needs.  So I would suggest using two USB cables.  Weird huh?
You might be able to get away with using just one USB cable if you have the AC adapter connected.

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1 Answer

I have Entrega hub 4U circa 1998. Warning "too high current draw.....will disable usb port 2007 duo core imac using OS 10.5.6. can I use this device or is it incompatible? Still works fine on 1998 ima


its just warning you that the hub is sapping too much power from the imac, newer hubs are only a couple of $$ and are much more power efficient, try somewhere like dealextreme.com

Apr 18, 2009 | Computers & Internet

1 Answer

Western Digital Passport 160 GB external HD won't load.


WinXP SP2 blocks the use of the drive because it thinks it draws too much power. But there is a simple procedure to override this (from WD site):

"Problem:
Under Windows XP, an error message of "Power Surge on Hub Port" or "USB device has exceeded the power limits of it's hub port" is displayed when connecting a USB device to a USB port on a computer or Hub.

Cause:
Under some computers, USB devices are only allowed to draw a maximum of 500 milliamps (mA) per connection from the USB port on the computer system or from a USB hub. Under the Windows XP Operating System, with the release of Service Pack 2, if a device attempts to draw more than this (500 milliamps), a USB port balloon message is displayed to indicate this over current condition. When connecting a USB device that draws power from the USB bus, a very brief over current condition is sometimes detected by the OS, and the warning message is displayed.

Resolution:
This message has no affect on the functionality of the USB port. The USB hard drive should still function correctly on the USB port regardless of the error message. To prevent the USB Power Surge Alert message from displaying, please complete the following steps:
Click on Start.

Click on Control Panel.

Double-click on the System Icon.

Click on the Hardware Tab.

Click on the Device Manager button.

Click on the + next to Universal Serial Bus Controllers to expand the selection.

Right-click and select Properties on any listing that displays USB UNIVERSAL HOST CONTROLLER.

Click on the Advanced Tab.

Check the box that says: Don't tell me about USB errors."

This works fine, and the drive works fine afterwards. I suspect it actually draws less power than they say. Maybe it has a brief power draw spike on startup, but it's running power seems less. In any case, it works fine without the Y cable. I do think it is tacky that WD doesn't give the cable for free, since my $7 Sabrent 2.5" Hard drive enclosure came with a y cable.

But most likely the drive will work fine for you. It is a lovely quiet drive, and takes up no space at all.

Feb 01, 2009 | Western Digital Passport 160GB External...

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