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INSUFFICIENT POWER - USB PORT If you get an error message "Insufficient power to operate USB device" when you plug a USB device into the computer's USB port or the un-powered USB hub that is attached to the computer's USB port, then this device is drawing excessive current that the USB port cannot supply. The maximum output from an USB port is 500mA. In case such as this, you need to purchased a powered USB hub and connect this hub into the computer's USB port and then connect the USB device into this powered USB hub.
If you get an error message "Insufficient power to operate USB device" when you plug a USB device into the computer's USB port or the un-powered USB hub that is attached to the computer's USB port, then this device is drawing excessive current that the USB port cannot supply. The maximum output from an USB port is 500mA. In case such as this, you need to purchased a powered USB hub and connect this hub into the computer's USB port and then connect the USB device into this powered USB hub.
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.
The USB port can only deliver aprox. 500mA. If your USB device such as a scanner etc. draws more current from the USB port then you will get this error message.
The solution is you use a powered USB device OR use a powered USB hub and connect this to the computer/laptop's USB port and then plug the USB device into the powered USB hub.
The power surge error means that your external drive is drawing more power than your USB port can supply. The best solution is buying a powered usb hub (USB hub with external power source) and connecting the device through that.
Alternatively (if you're desperate), you could try testing it in other ports - for instance, if you're using it in a front USB port, try the back ports and vica-versa. If you need something on the drive urgently, and you have the option, you could always try plugging it into another computer and getting the data that way, but of course this is only a temporary fix.
The fact that the drive is in a NTFS/FAT32 format shouldn't make a difference with regards to the main issue, which is power....but like I said, your best solution is unfortunately to buy a powered hub and running the drive through that.
The USB device could be drawing more current than the USB port can supply or the USB port may be faulty.
Get a powered USB hub and plug it into your computer's USB port and then plug the USB devices into the powered USB hub.
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
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
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
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.
Probably a power issue. Your new computer has less extra power capacity and the external drive is pulling from the USB port power.
What you need is a USB hub with an AC adapter that powers the hub and any devices that are connected to it from the external AC power adapter and NOT from the USB bus. In other words look for an external power adapter that plugs into the wall as well as into the USB port. Don't get a recharger for an iPOD as that will not do you any good. And don't get a hub that says "powered" or "external power" that does not have an AC power adapter because it is still sucking power off of the USB port.
Try shopping for a D-Link DUB-H4 High Speed USB 2.0 4-Port Hub. It is a good choice if you are not going to plug any USB 1.1 devices into it. Read the reviews for any device you choose.