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Jun 24, 2013 - If the device has a DC input of +12V / 5.4A, get an adapter that has a DC output of +12V / 5.4A. If you have a universal adapter, make sure it has the proper current rating ... Ideally, you'll have the same voltage, current and polarity on your ......or hdmi on my laptop .can you say what's the reason for the same.
An explanation of regulated versus un-regulated AC to DC voltage power adapters. ...voltage output power adapters and how to use this information to select the right one... Some (more expensive) DC voltage output power adapters have voltage ... Care should be take to ensure that the maximum input voltage of the load ...
Dec 26, 2008 - It's very important to use the right adapter for your laptop. ... Polarityon the new adapter's plug must be the same as on the original ... AC/DC power adapter voltage and amperage ..... I have purchased an non-hp dc-dc convertor (150W), 12Vinput, 19V output. .... So the cable component has to be replace.
this one below matches the exact model number of your hard drive
An external storage-device has four major components:
* the USB cable
* the power-adapter
* the disk-drive inside the enclosure
* the USB-to-disk-drive adapter inside the enclosure.
One of these components has failed.
Try a different USB cable.
Try connecting to a different USB port on your computer.
Try connecting to a USB port on a different computer.
Take a "multi-meter" and measure both the voltage and amperage output from the AC adapter, and compare with the specifications on the label on the adapter.
Open the enclosure, and remove the disk-drive, and then connect it as a "slave" disk-drive in a desktop computer, to see if it works at all.
Purchase a new, compatible, disk-drive, and install it in the enclosure, to "revive" your external storage device.
Get the part-number and serial-number from the label on your disk-drive, and access the manufacturer's web-site, and use "check warranty status", to see if they will replace the device, at minimal cost to you.
Note that W.D. has a "Customer Loyalty" program -- you can buy a new W.D. device, through the W.D. web-site, at a significant discount.
first of all , you are looking at the wrong voltages. The important voltage is the DC OUTPUT, which is the voltage the external harddrives use AND the polarity of the plug attached to the harddrive end of the cable.
if both the harddrives have say 12v dc output and both have the insignia of the center conductor being + (posative) then you can interchange them. and you CAN run a 9volt unit with 12volt DC power, but not the other way around.
Look at your power adaptors again for the OUTPUT and polarity.
should be a half-circle with lines depicting the polarity(+,-) of the center and sheild connections to the hard drives printed on both the harddrives and the power adaptors . This can also be tested with a dc volt meter while the adaptors are plugged into the wall.
DO NOT try to test the AC end while plugged in!!
try relocating where you connect the usb cable of your mybook, also check your usb drivers, maybe they are not good or obsolete. finally check the power adapter of the mybook maybe it is low output, or having low output so the read is slow,
you can also check if you have viruses in your mybook, could be also that the drive have bad sectors, chkdsk and fdisk would be a good option.