powered usb hub


9 posts
by forumisto » Tue Jun 19, 2012 11:24 am
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by AndrewS » Tue Jun 19, 2012 11:27 am
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by itimpi » Tue Jun 19, 2012 11:33 am
The first one does not seem to include a power adapter - and that would be needed as any hub used with the Pi should be externally powered.

The other two look like they MAY work. However they only include a 1A power adapter so for instance they could not power both the Raspberry Pi and a 2.5" HD which is I suspect a common requirement. I would be looking for a powered hub that includes a 2A or better rated power supply as it can then be used to both power the Pi and additional devices. It is always worth remebering that many (cheap) power supplies have proven to not deliver up their full rated amperage under load so skimping on the hub can be a false economy.
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by JeremyF » Tue Jun 19, 2012 1:30 pm
itimpi wrote:The first one does not seem to include a power adapter - and that would be needed as any hub used with the Pi should be externally powered.
.

It looks to me like the extra red male plug can go into a wallwart and provide power easily.
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by squeaky3 » Tue Jun 19, 2012 7:35 pm
I think I got the 7 port one - it leaks voltage down the connector cable and has errors. Even when I taped the 5V pin off, it would not accept more than one device, and plugging in more would make my R-Pi unresponsive.

I have just ordered the SumVision one from 7DayShop, as listed in

http://elinux.org/RPi_VerifiedPeripherals

This page has a list of tested hubs, and you'll probably find the ebay ones listed under 'problem hubs'!

It also appears that the better quality (and more expensive) hubs work best. Though even some Belkin ones show problems.
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by rmm200 » Wed Jun 20, 2012 12:20 am
Be really careful on cheap USB hubs. I have a really attractive "Plugable 10 port hub" that is just unusable on Pi.

Lots of non-obvious errors, like losing mouse after startx.
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by thradtke » Wed Jun 20, 2012 7:50 am
Where are you from? I'm using an inexpensive LogiLink 4-Port Hub, 2A, made from Aluminum. It powers the RPI, wireless desktop adapter and a 6GB ARCDisk. No problems thus far, but it might not be available worldwide under exactly this brand.

This is how it looks:

http://www.conrad.de/ce/de/product/9718 ... 2&ref=list

Good luck!
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by berniet » Wed Jun 20, 2012 8:26 pm
@rmm200 - The Plugable 10 port hub should work fine -- both from a USB controller point of view and from the point of view of having a plenty powerful 2.5A AC adapter. It's a carefully built unit. We use it with Linux all the time with 100% compatibility (although not yet with the Pi).

It sounds like your Pi is getting powered, so would want to figure out what's happening to the mouse after startx. /var/log/Xorg*log may have clues. Also think about emailing support@plugable.com -- Plugable is Linux aware and good about helping where possible.
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by rmm200 » Fri Jun 22, 2012 7:44 pm
Let me add I have two Plugable 10 port hubs, and I am very happy with them on PCs with Windows or Ubuntu.

They do not work for me on Pi.

I attribute this to a device driver problem (hub driver gets confused by too many ports?) but I have no time or interest in sorting this out.
It was much easier - for me - to buy a Belkin 4 port mini-hub which works great. My plugables are happy on my PCs - and so am I.
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