USB 2.0 problems

[Guest]

I've been reading lots of messages regarding below problems:

1.) USB 2.0 devices connecting as USB 1.1 on USB 2.0 ports
2.) USB 2.0 devices not being detected on USB ports

These problems are affecting me too, and I don't believe its a hardware
problem. This just happened when XP SP2 was installed.

Comments/newsgroups/questions should be reviewed as you will see that this
problem is common and becoming widespread.

Can anybody tell what's happening? For I also want to know the cause and of
course the solution as this renders my USB ports inop or slow.

 

[Richard Urban]

I've been reading lots of messages regarding below problems:

1.) USB 2.0 devices connecting as USB 1.1 on USB 2.0 ports
2.) USB 2.0 devices not being detected on USB ports

These problems are affecting me too, and I don't believe its a hardware
problem. This just happened when XP SP2 was installed.

Comments/newsgroups/questions should be reviewed as you will see that this
problem is common and becoming widespread.

Can anybody tell what's happening? For I also want to know the cause and
of
course the solution as this renders my USB ports inop or slow.

*********************************


According to my records I have repaired 67 computers/drives since June 1,
2005 that were brought to me with USB 2.0 problems. Here is the breakdown of
what I have found:

51 problems with external cases when the customer put their own drive in an
external case. These break down as follows:

a. 9 defective hard drives that people put into external cases

b. 10 instances of incorrect jumpers on drives in external cases

c. 7 external cases with defective power supplies

d. 8 instances where people were trying to use the external case without
the necessary plug-in power supply

e. 7 defective USB cables

f. 10 drives that were not partitioned or formatted



14 problems with name brand manufacturered external drives (Maxtor, W.D.
Seagate etc)

a. 1 defective hard drive

b. 12 drives that were not partitioned or formatted

c. 1 defective USB cable

2 problems with operating system

a. The correct driver for the device was not installed


Unless I am seeing a highly unusual cut of defects I would have to say that
about 95% of the USB problems are hardware related and that most of these
are user initiated.


--


Regards,

Richard Urban
Microsoft MVP Windows Shell/User

Quote from George Ankner:
If you knew as much as you think you know,
You would realize that you don't know what you thought you knew!

 

[Guest]

Richard,

Thanks for the stats. In this case as per your report, hardware and user is
the cause.

My inquiry below are as follows:

1.) In the case of incorrect jumpers on HD drives put on cases, What should
be the jumper setting in these usb devices. Also, as I am using these kinds
of HD drives (2 x 80 GB HD), will re-formatting/re-partitioning these will
solve the problem?
2.) As I have 3 USB 2.0 ports in my laptop, 2 are working as USB 1.1 and one
doesn't detect a USB device (Unknown device pop-up or advice), Is also a
hardware related problem? As I am hoping its not, but of course I'm posting
this to consult.


Daugg

 

[Jonny]

A hard drive placed in a USB or Firewire enclosure should be jumpered master
(master/alone with Western Digital).
All hard drives in USB and Firewire enclosure are ide/ata hard drives. They
are not USB devices.
The USB/Firewire enclosure provides the translation between the ide/ata hard
drive and the corresponding USB or Firewire bus.

Run Everest and tell us what you actually have regarding USB.

 

[Richard Urban]

The jumper setting depends upon the drive used. It must be set for master,
master without a slave or single - depending upon the manufacturer. I can't
tell you how many people I have spoken with who think that by removing all
jumpers will set the drive for master or single. On some drives it may, but
not on all drives. They never read the instructions that come with the DRIVE

As a test, remove the drive from the case - only if you assembled the unit
yourself. Connect it just the way it is to your 2nd IDE channel with an 80
wire IDE cable. The drive should be visible in the bios and usable in
Windows, as long as it is partitioned and formatted. If it is, you have
problems with other hardware (cable, case, case USB interface etc.).

--


Regards,

Richard Urban
Microsoft MVP Windows Shell/User

Quote from George Ankner:
If you knew as much as you think you know,
You would realize that you don't know what you thought you knew!