“Generic” power bricks for external disks?












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I’ve found some old external USB drives and drive enclosures. Some of them, I found the power bricks and cords for, others I haven’t, and a few have cords damaged sufficiently that they are unsafe to use. For the ones where the brick is missing or the cord damaged, can I purchase an "off-the-shelf" brick-and-cord system and use it successfully, provided that the brick’s output (both voltage and amperage) is equal to or higher than that required by the drive/drive enclosure, and that I have a compatible plug?










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  • 1





    Provided the brick supplies the same voltage it should be fine. The brick can support higher amperage, but if a device attempts to draw more amperage then the brick can support, that can be a safety issue. You typically just want to use a power brick that can supply exactly the same power as the OEM brick.

    – Ramhound
    Jan 17 at 16:29


















0















I’ve found some old external USB drives and drive enclosures. Some of them, I found the power bricks and cords for, others I haven’t, and a few have cords damaged sufficiently that they are unsafe to use. For the ones where the brick is missing or the cord damaged, can I purchase an "off-the-shelf" brick-and-cord system and use it successfully, provided that the brick’s output (both voltage and amperage) is equal to or higher than that required by the drive/drive enclosure, and that I have a compatible plug?










share|improve this question


















  • 1





    Provided the brick supplies the same voltage it should be fine. The brick can support higher amperage, but if a device attempts to draw more amperage then the brick can support, that can be a safety issue. You typically just want to use a power brick that can supply exactly the same power as the OEM brick.

    – Ramhound
    Jan 17 at 16:29
















0












0








0








I’ve found some old external USB drives and drive enclosures. Some of them, I found the power bricks and cords for, others I haven’t, and a few have cords damaged sufficiently that they are unsafe to use. For the ones where the brick is missing or the cord damaged, can I purchase an "off-the-shelf" brick-and-cord system and use it successfully, provided that the brick’s output (both voltage and amperage) is equal to or higher than that required by the drive/drive enclosure, and that I have a compatible plug?










share|improve this question














I’ve found some old external USB drives and drive enclosures. Some of them, I found the power bricks and cords for, others I haven’t, and a few have cords damaged sufficiently that they are unsafe to use. For the ones where the brick is missing or the cord damaged, can I purchase an "off-the-shelf" brick-and-cord system and use it successfully, provided that the brick’s output (both voltage and amperage) is equal to or higher than that required by the drive/drive enclosure, and that I have a compatible plug?







usb external-hard-drive power-supply






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asked Jan 17 at 15:43









Jeff ZeitlinJeff Zeitlin

1,492618




1,492618








  • 1





    Provided the brick supplies the same voltage it should be fine. The brick can support higher amperage, but if a device attempts to draw more amperage then the brick can support, that can be a safety issue. You typically just want to use a power brick that can supply exactly the same power as the OEM brick.

    – Ramhound
    Jan 17 at 16:29
















  • 1





    Provided the brick supplies the same voltage it should be fine. The brick can support higher amperage, but if a device attempts to draw more amperage then the brick can support, that can be a safety issue. You typically just want to use a power brick that can supply exactly the same power as the OEM brick.

    – Ramhound
    Jan 17 at 16:29










1




1





Provided the brick supplies the same voltage it should be fine. The brick can support higher amperage, but if a device attempts to draw more amperage then the brick can support, that can be a safety issue. You typically just want to use a power brick that can supply exactly the same power as the OEM brick.

– Ramhound
Jan 17 at 16:29







Provided the brick supplies the same voltage it should be fine. The brick can support higher amperage, but if a device attempts to draw more amperage then the brick can support, that can be a safety issue. You typically just want to use a power brick that can supply exactly the same power as the OEM brick.

– Ramhound
Jan 17 at 16:29












1 Answer
1






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oldest

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Generally, yes, it would be okay to purchase a generic power supply for your device; there isn't a specific requirement that the device must have its original power brick/supply



When looking for a replacement power supply, the voltage provided by the supply must be approximately the voltage required by the device, although there is a tolerance, so usually it's no problem to e.g. supply a 5V device with 5.5V.



With regards to amperage/current, however, the device will only take what it needs.






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  • So if I need to deal with devices that need 5V and devices that need 12V, I need two separate bricks? A single 12V brick risks damage to the 5V device?

    – Jeff Zeitlin
    Jan 17 at 16:02






  • 2





    Yes, that's correct; voltage is pushed, amperage is pulled. If you plug a supply rated 12V into a device that accepts 5V, it will damage it.

    – Rowan Richards
    Jan 17 at 16:12













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1 Answer
1






active

oldest

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1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









1














Generally, yes, it would be okay to purchase a generic power supply for your device; there isn't a specific requirement that the device must have its original power brick/supply



When looking for a replacement power supply, the voltage provided by the supply must be approximately the voltage required by the device, although there is a tolerance, so usually it's no problem to e.g. supply a 5V device with 5.5V.



With regards to amperage/current, however, the device will only take what it needs.






share|improve this answer
























  • So if I need to deal with devices that need 5V and devices that need 12V, I need two separate bricks? A single 12V brick risks damage to the 5V device?

    – Jeff Zeitlin
    Jan 17 at 16:02






  • 2





    Yes, that's correct; voltage is pushed, amperage is pulled. If you plug a supply rated 12V into a device that accepts 5V, it will damage it.

    – Rowan Richards
    Jan 17 at 16:12


















1














Generally, yes, it would be okay to purchase a generic power supply for your device; there isn't a specific requirement that the device must have its original power brick/supply



When looking for a replacement power supply, the voltage provided by the supply must be approximately the voltage required by the device, although there is a tolerance, so usually it's no problem to e.g. supply a 5V device with 5.5V.



With regards to amperage/current, however, the device will only take what it needs.






share|improve this answer
























  • So if I need to deal with devices that need 5V and devices that need 12V, I need two separate bricks? A single 12V brick risks damage to the 5V device?

    – Jeff Zeitlin
    Jan 17 at 16:02






  • 2





    Yes, that's correct; voltage is pushed, amperage is pulled. If you plug a supply rated 12V into a device that accepts 5V, it will damage it.

    – Rowan Richards
    Jan 17 at 16:12
















1












1








1







Generally, yes, it would be okay to purchase a generic power supply for your device; there isn't a specific requirement that the device must have its original power brick/supply



When looking for a replacement power supply, the voltage provided by the supply must be approximately the voltage required by the device, although there is a tolerance, so usually it's no problem to e.g. supply a 5V device with 5.5V.



With regards to amperage/current, however, the device will only take what it needs.






share|improve this answer













Generally, yes, it would be okay to purchase a generic power supply for your device; there isn't a specific requirement that the device must have its original power brick/supply



When looking for a replacement power supply, the voltage provided by the supply must be approximately the voltage required by the device, although there is a tolerance, so usually it's no problem to e.g. supply a 5V device with 5.5V.



With regards to amperage/current, however, the device will only take what it needs.







share|improve this answer












share|improve this answer



share|improve this answer










answered Jan 17 at 15:56









Rowan RichardsRowan Richards

1083




1083













  • So if I need to deal with devices that need 5V and devices that need 12V, I need two separate bricks? A single 12V brick risks damage to the 5V device?

    – Jeff Zeitlin
    Jan 17 at 16:02






  • 2





    Yes, that's correct; voltage is pushed, amperage is pulled. If you plug a supply rated 12V into a device that accepts 5V, it will damage it.

    – Rowan Richards
    Jan 17 at 16:12





















  • So if I need to deal with devices that need 5V and devices that need 12V, I need two separate bricks? A single 12V brick risks damage to the 5V device?

    – Jeff Zeitlin
    Jan 17 at 16:02






  • 2





    Yes, that's correct; voltage is pushed, amperage is pulled. If you plug a supply rated 12V into a device that accepts 5V, it will damage it.

    – Rowan Richards
    Jan 17 at 16:12



















So if I need to deal with devices that need 5V and devices that need 12V, I need two separate bricks? A single 12V brick risks damage to the 5V device?

– Jeff Zeitlin
Jan 17 at 16:02





So if I need to deal with devices that need 5V and devices that need 12V, I need two separate bricks? A single 12V brick risks damage to the 5V device?

– Jeff Zeitlin
Jan 17 at 16:02




2




2





Yes, that's correct; voltage is pushed, amperage is pulled. If you plug a supply rated 12V into a device that accepts 5V, it will damage it.

– Rowan Richards
Jan 17 at 16:12







Yes, that's correct; voltage is pushed, amperage is pulled. If you plug a supply rated 12V into a device that accepts 5V, it will damage it.

– Rowan Richards
Jan 17 at 16:12




















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