the terse message from CELL phone that it.
asking about complex computer issues.?
P/S = means? what. please or power system.
external Hdd, ,there are so many none stated. at all.
USB is 5vdc and currents can be tool on many PCs and notebooks. no PC stated at all , no HDD ext stated.
good external drives over 500mA drain have a POWER PACK
if not will not run on many laptops etc.
Some HDD need 2 amps to run other 1amp other 500 or as low as 200mA, to run, vast HDD exist and the rules are not the same for every one or maker or model.
personally I use External enclosures that have AC pack. 2.5amps
and will work on ANYTHING made, any PC of any kind and even my TV, The HDD has motor and if the startup current is over what you USB port can deliver (some are 100ma max) then it fails.
and fails hard, even damage the HDD heads.
see the first chart here.
http://www.pcdied.com/external-hdd.html
if the PC only does 100mA, you are doomed, see why?
NO NAS stated or model at all. so no exact answers possible at all. no HDD maker.
It may seem like there is power, but it isn't Enough power. LED lights may light, fans may spin, and you may even hear the Harddrive spinning, but the Processor isn't running. 1) ALL the LED lights use less than 1 Watt of power. 2) EACH fan uses 2 to 3 Watts of power. 3) A typical Processor can use 51 to 125 Watts of power. Depends on what Processor it is. (Older Processors, such as a Pentium III for example, use less power) Suggest you check the Power Supply voltages. Specifically the 12 Volt rail. 11 to 13 Volts is okay. Less than 11 Volts means replace the Power Supply. (bad Power Supply, weak Voltage power rail) OR, use a KNOWN to be good, Compatible power supply for a test unit. It's an ATX style of Power Supply, that is rated at 250 Watts.
×