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

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?


Charles Slack

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)… this combination of attached hardware will not work. The USB2-HUB7BC (60 W power supply) however would be a much better and capable candidate to power the Pi as well as your hard drives.

Kind regards,
Plugable Technologies

Thanks for the prompt and detailed reply Patric.

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

Thanks again,


Hi Charles,

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

Kind regards,
Plugable Technologies