USB version

  • Thread starter Thread starter Ramesh
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Ramesh

hi,

i have an acer 1360 laptop which according to the specs has 4 USB 2.0 ports.
Recently I installed SISSandra software to get a hardware report. The
report I got said that the system has 3 1.1 controllers and 1 USB 2.0
controller. Does this mean only one of the ports on the panel is 2.0? Or
could it mean that only the 2.0 controller is being used for all the 4
ports? How can I test the version of each of the port?

Thanks for any support.

Ramesh
 
Ramesh said:
hi,

i have an acer 1360 laptop which according to the specs has 4 USB 2.0
ports. Recently I installed SISSandra software to get a hardware report.
The report I got said that the system has 3 1.1 controllers and 1 USB 2.0
controller. Does this mean only one of the ports on the panel is 2.0? Or
could it mean that only the 2.0 controller is being used for all the 4
ports? How can I test the version of each of the port?

Thanks for any support.

Ramesh
Click to expand...

Hogwash. How many USB ports are visible on the laptop, the written specs
may mean nothing regarding this.

The USB 2.0 controller is only applicable to controller or controllers that
are 2.0 capable.
 
Thanks Jonny.

There are 4 visible ports on my PC. But I need to know if all of them are
2.0 compliant. How do i do that?

Thanks
Ramesh
 
You see the 1.1 listing because the 2.0 is backward compatible for 1.1. As long as you see the 2.0
listing then your ports are 2.0. I use a program called USB Monitor (just Google to find it). It
will show you the exact breakdown of all your ports, what is connected and the specs(1.1/2.0) that
the device is using.
 
Ramesh said:
Thanks Jonny.

There are 4 visible ports on my PC. But I need to know if all of them are
2.0 compliant. How do i do that?
Click to expand...

All your 4 ports are 2.0 capable and the spec isn't a "hogwash".
The current crop of USB 2.0 EHCI controllers behaves in a quite confusing way.
Each port internally is connected to both 2.0 and 1.1 parts of the EHCI
controller.
If the connected device is 2.0, host controller internally routes it to a
2.0 circuits, and v.1 devices are routed to v.1.1 circuits.
Each v.1 circuit of the EHCI controller can handle only two ports, this is
why you see several of them; usually 3, on some models 4.

If this looks confusing, please read again :)

Regards,
--PA
 
A one line reply I was given a year ago-
In Hardware/Device Manager - click on Univ Ser Bus - if you see USB2
Enhanced Controller - you have Usb2's'
Rgds
Antioch

Ramesh said:
Thanks Jonny.

There are 4 visible ports on my PC. But I need to know if all of them are
2.0 compliant. How do i do that?

Thanks
Ramesh
Click to expand...
 
If you've checked for operability with a USB device on all the 4 ports for
operation, then you do similar with a USB 2.0 device that moves data quickly
like an external hard drive. Copying a large amount of data from your
onboard drive to the external drive and note the time it takes. Delete the
data on the external, and try the next port.
Despite the comments I've read here, just because the enhanced USB is
enabled and working in device manager doesn't mean its working for all the
ports. Manually checking is the only way to know for sure.
--
Jonny
Ramesh said:
Thanks Jonny.

There are 4 visible ports on my PC. But I need to know if all of them are
2.0 compliant. How do i do that?

Thanks
Ramesh
Click to expand...
 
Jonny said:
If you've checked for operability with a USB device on all the 4 ports for
operation, then you do similar with a USB 2.0 device that moves data quickly
like an external hard drive. Copying a large amount of data from your
onboard drive to the external drive and note the time it takes. Delete the
data on the external, and try the next port.
Despite the comments I've read here, just because the enhanced USB is
enabled and working in device manager doesn't mean its working for all the
ports. Manually checking is the only way to know for sure.
Click to expand...

No need to check manually. A utility like one mentioned by David Vair does
the job instantly.

--PA
 
Thanks Antioch. That sounds pretty straight and simple.
My device manager says VIA Rev 5 or later USB Universal Host controller.
How do I interpret that?

Thanks
Ramesh

antioch said:
A one line reply I was given a year ago-
In Hardware/Device Manager - click on Univ Ser Bus - if you see USB2
Enhanced Controller - you have Usb2's'
Rgds
Antioch
Click to expand...
 
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