KeithDib wrote:
Hi,
Not sure how the amps of the HDD would effect the path of certain files?
Keith
simple example:
Device draws 1 amp ... port supplies .5 amp.
device has insufficent power and runs , but not properly (barely limping along). As the overload on the circuit extends over a period of time it overheats the protection circuit and it interupts the power (a brown out / low voltage / insufficient current / lack of sufficient power issue). This manifests itself as a copy error. Obviously the device will draw more power when it is working than when it is idle, during the copy process the HDD is at full current draw for an extended period of time.
Power circuits will tolerate being over loaded for short periods of time. Most power supplies are not 100% "Duty cycle" if you look they will be rated at say 75% duty cycle. that means that a 500 watt power supply will run at it's peak rating of 500 watts for a breif period, say a few seconds. It's "nominal" or continuous rating is 75% of 500 watts or 425 watts. Thus not all 500 watt power supplies are actually 500 watts. Which is why some cost 100 dollars and some cost 35 dollars. the higher priced ones are 100% duty and the cheap ones may only be 60% duty (your cheap 500 watt supply is really only a 300 watt.) While this 500 will boot your computer and possably install the OS once you start a game or fire up that autocad program or watch a movie then your PC blue screens and poops out. You were over 300 watts for too long ...
Worth looking at, may be a possable cause, may not. Many external USB hubs and other devices have their own power supply just for this reason.
I had a 2.5 HDD case that was USB sometimes i could run it off the usb cable sometimes i had to also connect the "extra" USB power cable. (thus it would draw power from TWO USB ports or the USB port and the Keyboard port becuase the single USB port had insufficeint power to run the HDD properly.
tech dude additionally points out that cheap cables also will cost you some power (voltage drop) on top of what the device needs.
The lights are on... but nobody is home
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finisher is in the OEM folder. (you really couldn't find it on your own???)