So here the Y cable I'm thinking of buying it's to connect my Western digital Elements HDD to a different power-source rather than using the Raspberry Pi as an only usb power but also using the other USB to allow for my Pi to mount the HDD, will it work?



1 Answer 1


That is going to back feed power to whatever it is attached to.

I purchased a powered USB hub from eBay that is then plugged into my Rasberry Pi2. I have a USB2 sata docking station with a NTFS formatted drive in it that plugs into the hub, THEN into the PI. I find that my pi runs very stable with a low load on the built in hub, and a heavy load on the powered hub. I'm now looking at purchasing a USB3 Dock for flexibility with other laptops.

This is the unit I purchased: USB2 7 Port powered hub pi compatible

  • Thanks for the answer but does the data transfer over the powered usb hub to the pi. And you were right it didn't work it back-fed
    – Shabubble
    Commented Mar 18, 2015 at 22:12
  • how did you connect your hdd into the hub and then connect it to the Pi? A picture would help thanks
    – Shabubble
    Commented Mar 18, 2015 at 22:38
  • I have an older USB2 sata dock Thermaltake that I have plugged into the powered usb hub. Like this one: ebay.ca/itm/like/… I used these instructions howtogeek.com/139433/…
    – Ron K.
    Commented Mar 25, 2015 at 1:47

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.