Monday, September 1, 2008

USB ports and hubs

We've had conversations about using USB devices...

Someone in our (Ustream.tv) chat room suggested we review "USB Hub Design and Windows".

Per the USB Implementers Forum, the specification for cable lengths is 3 meters to 5 meters.

I have used longer cables, but only for devices that do not need to be powered by the USB port. And, I have USB devices that cannot be powered by certain computer ports because the ports do not provide enough power for the device: because of bad experiences I do not trust USB devices that use Y-cables.

When considering using powered hubs, keep in mind that what is considered to be a "compliant bus powered hub" has only four ports.

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1 Comments:

At April 17, 2008 at 11:19 PM , Anonymous wirelesspacket said...

In my opinion one needs to be careful when purchasing powered usb hubs. You always get what you pay for when purchasing a hub.

If you need a few extra usb ports inside of your computer (Desktop) I would suggest something like the Belkin PCI F5U219v1 available here.

http://www.newegg.com/Product/Product.aspx?Item=N82E16815108011

For your Laptop computer I would suggest something like the Belkin F5U203. This unit is completely powered by the machine it is attached to. So there is no need to carry around a messy power adaptor.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817394038

I do suggest purchasing a powered USB hub for your laptop if you are the type of person who uses USB external hard drives that powered by USB only.

Search http://newegg.com

I tend to stay away from the $5 hubs simply because they are not well constructed at all. I only purchase Belkin products when it comes to USB hubs. But thats my opinion. 8)

 

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