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Hi guys,
I lost my original power adapter 12V 1800mA 18Watts for external WD. I have another from older WD but its 12V and only 1500mA and if I connect this it's not working. Than I have some 12V 3000mA - it's from LCD screen - can I use it or it's too much and I should stick with 1800mA ?
Thanks a lot for any ideas/advice.
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Hi @roboscrap
The device will only use as much current as it needs to, to operate.
As long as the voltage is the specified value i.e. 12V then using a 12V 3000mA adapter won't be a problem.
The problem with using the 1500mA adapter was that it couldn't supply enough current.
As you didn't specify the model I'm assuming that it uses an adapter with a centre pin +ve output connection as this is the most common connection.
If the adapter has a centre -ve pin output connection it will damage the HDD electronics.
The polarity of the output should be shown on the adapter case.
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Center is +ve so I am good to go. Thank you very much.
UPDATE - IF YOU DON'T CONNECT your external WD HDD to the USB/FireWire - it will not start up :D
Probably because standard USB ports only provide max of 500mA @ 5V
Firewire provides max 1500mA @ 8V - 30V
@jayeff thanks for info :)
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