Using a USB 3.0 Device on a Plugable 7 port USB 2.0 Hub


#1

What is the effect of plugging a USB 3.0 device into a Plugable 7 port USB 2.0 hub?

Specifically I am plugging 2 USB hard drives into the hub and also using it to power a Raspberry Pi. The USB drives are:

Buffalo HD PX320U2 (USB 2.0)
WD My passport Ultra 1TB (USB 3.0)

I have read that the USB 2.0 spec only allows the device 500 mA/port and that USB 3.0 devices can need 900 mA

I have also read that the Plugable 7 port USB 2.0 hub is fully forward and backward compatible with USB 1 and USB 3

Can you help?

Regards,

Charles Slack


#2

Hello Charles,

Both USB hubs are capable of running USB 2.0 and 3.0 devices but the answer actually depends on which USB hub we are talking about since there is a difference in overall power delivery. If you mean the USB2-HUB-AG7 (15 W power supply) http://plugable.com/products/usb2-hub… this combination of attached hardware will not work. The USB2-HUB7BC (60 W power supply) http://plugable.com/products/usb2-hub7bc however would be a much better and capable candidate to power the Pi as well as your hard drives.

Kind regards,
Patric
Plugable Technologies


#3

Thanks for the prompt and detailed reply Patric.

Looks like I need to get the HUB7BC. Off to check on Amazon.

Thanks again,

Charles


#4

Hi Charles,

You are welcome. You can contact us directly at support@plugable.com anytime if you have further questions or concerns.

Kind regards,
Patric
Plugable Technologies


#5