Re: Western Digital Passport 160 GB external HD won't...
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.
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may need to plug it in to a better outlet if you that option, worked for me. for a 500 GB external hd. i couldnt figure out why it only worked on occasion and on certain pc's and it all had to do with it not recieving enough energy.
I had this same issue. Found it to be a sequencing issue. Plug the USB into the router with the power off to the HDD. Power on the HDD and you should be able to get to it fine. Also make sure you have the latest firmware on the router.
Buy an External USB 2.0 Hub with the 5.0V power supply. I have a TARGUS 4 Port Hub. MY WD2500XMSB works fine thru the HUB, but will not work using any cable (even the one that came with it) when directly connected to the USB port on my computer. The power consumption of passports sometimes exceeds the .5 milliwat rating for the ports and ccause the port power to interrupt (see USB 2.0 specifications). The external hubs with external power have a higher power output usually an can power the passport drives. CW Rumsey
I devised these simple steps that tend to remedy quite a few issues with most USB portable / external hard drives and devices (though not always)
A few things to check but assumes USB and Windows for other interfaces / operating systems similar steps may be adapted to suit.
1. Ensure it is connected directly to the computer to a USB 2.0 port not a USB 1.0 port as this can have effects on performance and reliability
2. Use only the cables that came with it NOT one that fits that may have been lying around or is longer. Not all USB cables are equal even though they should be)
3. Do not connect through an external USB HUB unless that hub is USB 2.0 AND has its own power supply.
4. Use ONLY the power supply that came with it if it has an external power supply Don’t use any other unless you know it has both the same voltage and current rating e.g. 12V 500mA anything rated below that would not work properly.
5. Always use the same port for connecting your devices. Some devices do not like being switched about. If switched they may want to install software / drivers again. This can be especialy true if you move a HUB to another port
If you checked and fixed anything there and still have issues then check your hardware from CONTROL PANEL / SYSTEM / HARDWARE.
Any exclamation marks by hardware need fixing before you investigate any further
It is also possible that if the port you are using gets a lot of frequent use than it may need a little TLC with a fine tipped soldering iron.
Quick checks of the drive itself can be done by removing it from its enclosure and connecting it directly to a comuter that has the correct interface. If you can read and use the drive then you know it is not that. If you cannot use the drive in any way and esp. if you hear clicking or pinging then the drive is almost certainly dead or dying.
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.
i have the same problem. macbook doesn't see anymore my hdd western digital 2,5'' white 250 GB. tried disk warrior, disk utility but nothing. it's just seem disappeared, even if i hear it works inside (and the led light is on) what can i do?