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Old 05-14-2014, 06:31 AM   #1
dorsio
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SSD drive


Does the external SSD drive require higher current consumption compare to 2.5" HDD SATA drives? Does it make sense to connect an external SSD drive to laptop through the powered USB hub? Can the higher current affect laptop motherboard, or cause other unwanted effects?

Last edited by dorsio; 05-14-2014 at 06:36 AM.
 
Old 05-14-2014, 07:39 AM   #2
pan64
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I think ssd does not require higher current consumption. it cannot harm motherboard. You can safely connect external SSD to laptop.
 
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Old 05-14-2014, 07:48 AM   #3
gengisdave
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Every USB port has a current of 500 mA, which is enough for both SSD/HDD-2.5 drives. If you connect an hub to a usb port, you share that 500 mA between all the hub's ports (sometimes an external power is needed).

An SSD drive use about a third of the power needed to an HDD drive (a half in a stress time).

PS: every USB ports has a voltage of 5V, regardless of number of ports and device connected.
 
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Old 05-14-2014, 08:42 AM   #4
dorsio
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I mean Externally powered Hub - this type of Hub is widely used to connect Raspberry Pi.
 
Old 05-14-2014, 08:46 AM   #5
pan64
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it depends on that power supply and the other devices connected.... Anyway if HDD worked earlier SSD will work too as a replacement.
 
Old 05-14-2014, 02:57 PM   #6
jefro
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You check the power available and you check the current requirement of the drive. Not all drives consume the same amount. Some may exceed the built in power total.

Attaching a ssd to a powered hub may not allow it to run at any kind of true speed. May be some boot issues too. You'd have to test.
 
  


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