Currently Being ModeratedNov 7, 2012 12:27 AM (in response to Daenielcchoe)
I have exactly the same problem on my Macbook pro Retina display 2012.
I purchased a Uspeed 7port USB3 hub, but only 3 of the ports were working with USB3 devices. I initially thought the hub was defiective so exchanged it for a new one. Unfortunately the new hub has exactly the same problem (only 3 ports working)
Having found this thread, I'm now suspecting this is a problem with the Mac and not the hub?
Currently Being ModeratedNov 7, 2012 12:31 AM (in response to scodam)
I sometimes run outta USB ports and have considered purchasing a hub albeit I would prefer a thunderbolt connected USB hub.
So I am interested in the explanation of your obscure problem, lets do some troubleshooting.
What happens when you plug the 4th device into the hub? does it not detect at all, does it powerup?
also what happens if you plug the 4th device in and remove one of the others?
Currently Being ModeratedNov 7, 2012 12:47 AM (in response to sidonsoft)
In my case it's simply that only 3 particular ports from the 7 recognise USB3 devices. The remaining 4 ports only recognise USB1/2 devices. It doesn't seem to matter how many devices are plugged in overall, I've experimented from having all 7 ports full, to having only one port used, but always the same issue. I realise this sounds like a problem with the hub (and it still may be), but now having tried two different hubs and cables, and seeing someone else with the same problem I'm susupecting it may actually be an issue with the computer.
Currently Being ModeratedNov 7, 2012 1:12 AM (in response to sidonsoft)
The only USB3 devices I have currently are LaCie external HDs, and it's these I've been testing in all the ports. All USB2 devices I have (Wacom/HDs/Scanner/Printer etc) work in any of the 7 ports.
Currently Being ModeratedNov 7, 2012 1:16 AM (in response to scodam)
amuse me for a moment and connect 4 of your lacie hard drives to the usb 2 hub, then connect that hub to one port of your 7 port hub and see if all hard drives appear on your system.
Currently Being ModeratedNov 7, 2012 1:33 AM (in response to sidonsoft)
All the devices plugged into the USB2 hub (inc the USB3 HDs) mount up - but only when the USB2 hub is plugged into one of the 3 ports on the USB3 hub that are working. When plugged into one of the 4 that only work with USB2, nothing mounts at all?
Currently Being ModeratedNov 7, 2012 1:50 AM (in response to scodam)
if you opened your 7 port hub, you would notice different controller chips for the ports.
unfortunately you have a 7 port hub but only 3 of the ports are controlled by the USB 3.0 chip
they should have advertised your hub as 3.0 USB 3.0 + 4x USB 2.0 HUB
find another brand
* I don't know why your lacie drives don't revert to USB 2.0
Currently Being ModeratedNov 7, 2012 1:51 AM (in response to sidonsoft)
Yes, my initial thoughts also were that only 3ports were wired up for USB3 on the Uspeed hub (even though it's definitely sold as a USB3 7 port). But, now having tried two hubs (they replaced the first one when I explained the problem), and seeing someone here also having the same problem with a Belkin 7 port USB3 hub, it led me to believe that there may possibly be something deeper - anyhow seems strange to have 3 hubs with this same problem? But, of course, thanks for the help anyway, it's appreciated.
Currently Being ModeratedNov 7, 2012 1:58 AM (in response to scodam)
there are some hubs available with 4 usb 3.0 out of the 7 usb port configuration, having shopped around a little on newegg just now.
There doesn't seem to be any 7 port usb 3.0 only hubs but some with the 3x usb 3.0/4x usb 2.0 configurations as well. Looks like 4x usb 3.0 is the best you'll get right now.
I had a look at this product http://www.newegg.com/Product/Product.aspx?Item=0BD-007X-00002 but I am dubious to its claims of mac os not being compatible with USB 3.0