Can't find EHCI in Device Manager

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Guest

OK. I'm following the directions. I want to enable the USB 2.0
drivers for my ASUS P4BGL-VM mobo.

I went to Device Drivers and Universal Serial Bus controllers. I'm
supposed to "Right-click USB 2.0 EHCI Host controller, and then click
Update Driver."

However -- there is NO EHCI controller listed. Here's what's listed:
Generic USB Hub (this is on my keyboard)
Intel 82801DB/DBM USB Universal Host Controller - 24C2
Intel 82801DB/DBM USB Universal Host Controller - 24C4
Intel 82801DB/DBM USB Universal Host Controller - 24C7
USB Root Hub
USB Root Hub
USB Root Hub

The motherboard user's guide refers to BIOS settings. I don't know
what that is.

I appreciate your help.

<*((((><{
(e-mail address removed)
 
The motherboard user's guide refers to BIOS settings. I don't know
what that is.
Click to expand...

Then you are a really rare specimen. Until today I thought that everybody knows what is BIOS.

--PA
 
I HAVE the manual for my motherboard. Someone on this list told me to
look in device manager for "enhanced," which would indicate USB 2.0.
Another told me to look for the EHCI entry and update the driver to
bring the ports up to USB 2.0 standard.

The motherboard says I have 2.0 ports but need to get the drivers.
That was published in Nov. 2001, but the mobo was installed on Aug.
2001.

Later, I applied SP1 to XP Home. The USB 2.0 drivers are included in
SP1. Somebody on this list told methat I do not have USB 2.0 ports
because they weren't available in 2001 and that I need to buy a USB
2.0 card.

As you see, I've been getting conflicting information. I need to
figure out
1. Do I have USB 2.0 ports? (yes, because the ASUS user's
manual says so).
2. Do I have USB 2.0 drivers installed?
3. How do I find out if I have USB 2.0 driver's installed?
4. If they aren't installed, how do I install them?

<*((((><{
(e-mail address removed)



In the last exciting episode on Tue, 23 May 2006 07:45:26 -0500, Bob I
 
From your observations it seems you do not have USB 2.0. Perhaps a BIOS
update is required for your motherboard to support USB2?
 
What is a BIOS update:? What is a BIOS? It sounds scary.

I don't know where to begin with this.

<*((((><{
(e-mail address removed)

In the last exciting episode on Wed, 24 May 2006 08:09:52 -0500, Bob I
 
BIOS = Basic Input/Output System (iirc) but what it does is provide all the
input/output services for your system when it first boots (and sometimes
later, depending on OS, but not for XP). Additionally, it also contains a
setup program which is used to set parameters used by the BIOS routines as
well as optional selections of parameters (very old machines often used
jumpers) for video, hd, PCI, etc. Generally, you have an option to 'Enter
Setup' early on in the POST process (prior to booting) which is usually to
press the 'DEL' key but can be other combinations. This allows you to see
what's up and change things there. Virtually any machine in use today has
this code in rewritable memory, the process referred to as 'flashing the
BIOS' is using a special program to rewrite this code, providing the user
with the means of eliminating bugs in it, or occasionally, increased
functionality--generally referred to as a 'BIOS upgrade'. Be advised that
this can be a risky process, should anything interrupt (such as a power
failure) the writing, you will have a machine which probably will not boot.
Some mbds have dual BIOSes, so that you have one to fall back to, should
anything go wrong. Your mbd manual, if you know where to find it, should
tell you about the process.

From the previous posts to this thread, you'd do well to go to the forum
recommended to you, and find out if this is a recognizable problem.

Hth,
J
 
I'd like some help on getting to BIOS and changing whatever settings
need to be changed.

<*((((><{
(e-mail address removed)



In the last exciting episode on Wed, 24 May 2006 10:20:11 -0500, Bob I
 
Thank you for the information. Can you help me to get to the BIOS and
change (if needed) the settings so that my USB will be 2.0 and not
1.1?

Thank you.

<*((((><{
(e-mail address removed)



In the last exciting episode on Wed, 24 May 2006 11:48:21 -0700, "jt3"
 
Depending upon hardware and your SP (should be 2) you should automatically
be capable of 2.0.

Getting into the BIOS setup is machine dependent, as I said earlier, but
generally, there is an instruction on the screen when you first start your
computer (have your monitor running before, so that you can see it).
Usually it's something like:

Press Del to enter SETUP

but the key may be other than 'Del'. If you don't see this, you may need to
consult the documentation for your machine/motherboard. If you don't have
the documentation, try Googling the manufacturer. Be ready with the model
number. If it is a generic machine, then you need to look at the
motherboard to see if you can spot the manufacturer/model number on the
board, sometimes printed on in white ink/paint, sometimes on a sticker. If
all else fails, knowlege of the chipset will often get you somewhere. If
this is too much to do, try Googling for Belarc Advisor, a free program
which will tell you a lot of what you need.

hth,
Joe
 
Thanks. I DO have the manual for the mobo and I've been looking at
it. It confuses me. I'm not a tech, but I like to learn about
computers. I decided not to buy ready-made computers anymore, but to
replace components as needed and keep the quality and reliability
high. I'm also broke -- as in no income for 4 years, and lots of
school loans. Better to get an education in your 50's than never get
one at all!

Anyhoo -- the mobo is ASUS P4BGL-VM. The book and the installation CD
all say that the ports will support USB 2.0 but that I have to
download the drivers from MS. This was in Nov. 2001. Of course, MS
no longer has the drivers for download.

I've got XP Home SP 1. The USB 2.0 drivers are part of SP 1. But are
they installed? And if so, are is the BIOS set up to allow USB 2.0
devices to use them?

I've checked the device manager, as I was told, and there are no EHCI
or "enhanced" references anywhere.

Can you help me?

<*((((><{
(e-mail address removed)



In the last exciting episode on Thu, 25 May 2006 14:40:01 -0700, "jt3"
 
OK Guys,. I got into the Bios.

============================================================
BIOS & MY CHANGS:
One selection was whether to allow Legacy USB 1.1 to be enabled.
I left it enabled.
Another selection was whether to allow Enhanced USB. I changed
it to ENHANCED.
Another selection was for USB 1.1 -- its options were None, 1, 2,
or 3 controllers. It was set at three and I left it there.

I rebooted. All USB devices are working.

============================================================
I checked Device Manager. It says:

UNIVERSAL SERIAL BUS CONTROLLERS
Generic USB Hub
Intel 82801DB/DBM USB 2.0 Enhanced Host Controller - 24CD
Intel 82801DB/DBM USB Universal Host Controller - 24C2
Intel 82801DB/DBM USB Universal Host Controller - 24C4
Intel 82801DB/DBM USB Universal Host Controller - 24C7
USB Root Hub
USB Root Hub
============================================================

Here are my QUESTIONS:
1. Why do I have TWO "USB Root Hub? ________
2. How many of my USB ports are set to USB 2.0?
3. What do 24CD, 24C2, 24C4 and 24C7 mean?
4. I have SIX USB ports on the ATX case. Four are in the back
-- same as in the mobo manual and the manual you had me download. the
other TWO are on the right-side of the computere case. WHICH ports
are showing up in Device Manager?
5. Is there a way to plug in a USB "tester" into each port and
check the speed, and find out that way if they are set to USB 1.1 or
to USB 2.0?
7. If I DISABLE Legacy Support for USB 1.1, will my old USB
devices still work?
8. Should I set the USB 1.1 settings to NONE?

============================================================
AFTERTHOUGHTS:
9. Do I still have to install a separate USB 2.0 card, as
earlier recommended?
10. Do I still have to install XP Home SP 2 in order to get USB
2.0 drivers, as earlier suggested?


Thanks so much for your patience. It's frustrating for me, but
bit by bit I learn a little more, and get my computer to do what I
need.

<*((((><{
(e-mail address removed)





In the last exciting episode on Thu, 25 May 2006 15:51:36 -0700,
Thanks. I DO have the manual for the mobo and I've been looking at
it. It confuses me. I'm not a tech, but I like to learn about
computers. I decided not to buy ready-made computers anymore, but to
replace components as needed and keep the quality and reliability
high. I'm also broke -- as in no income for 4 years, and lots of
school loans. Better to get an education in your 50's than never get
one at all!

Anyhoo -- the mobo is ASUS P4BGL-VM. The book and the installation CD
all say that the ports will support USB 2.0 but that I have to
download the drivers from MS. This was in Nov. 2001. Of course, MS
no longer has the drivers for download.

I've got XP Home SP 1. The USB 2.0 drivers are part of SP 1. But are
they installed? And if so, are is the BIOS set up to allow USB 2.0
devices to use them?

I've checked the device manager, as I was told, and there are no EHCI
or "enhanced" references anywhere.

Can you help me?

<*((((><{
(e-mail address removed)



In the last exciting episode on Thu, 25 May 2006 14:40:01 -0700, "jt3"
Click to expand...

<*((((><{
(e-mail address removed)
 
OK Guys,. I got into the Bios.

============================================================
BIOS & MY CHANGS:
One selection was whether to allow Legacy USB 1.1 to be enabled.
I left it enabled.
Another selection was whether to allow Enhanced USB. I changed
it to ENHANCED.
Another selection was for USB 1.1 -- its options were None, 1, 2,
or 3 controllers. It was set at three and I left it there.

I rebooted. All USB devices are working.

============================================================
I checked Device Manager. It says:

UNIVERSAL SERIAL BUS CONTROLLERS
Generic USB Hub
Intel 82801DB/DBM USB 2.0 Enhanced Host Controller - 24CD
Intel 82801DB/DBM USB Universal Host Controller - 24C2
Intel 82801DB/DBM USB Universal Host Controller - 24C4
Intel 82801DB/DBM USB Universal Host Controller - 24C7
USB Root Hub
USB Root Hub
============================================================

Here are my QUESTIONS:
1. Why do I have TWO "USB Root Hub? ________
2. How many of my USB ports are set to USB 2.0?
3. What do 24CD, 24C2, 24C4 and 24C7 mean?
4. I have SIX USB ports on the ATX case. Four are in the back
-- same as in the mobo manual and the manual you had me download. the
other TWO are on the right-side of the computere case. WHICH ports
are showing up in Device Manager?
5. Is there a way to plug in a USB "tester" into each port and
check the speed, and find out that way if they are set to USB 1.1 or
to USB 2.0?
7. If I DISABLE Legacy Support for USB 1.1, will my old USB
devices still work?
8. Should I set the USB 1.1 settings to NONE?

============================================================
AFTERTHOUGHTS:
9. Do I still have to install a separate USB 2.0 card, as
earlier recommended?
10. Do I still have to install XP Home SP 2 in order to get USB
2.0 drivers, as earlier suggested?


Thanks so much for your patience. It's frustrating for me, but
bit by bit I learn a little more, and get my computer to do what I
need.

<*((((><{
(e-mail address removed)





In the last exciting episode on Wed, 24 May 2006 11:48:21 -0700, "jt3"
BIOS = Basic Input/Output System (iirc) but what it does is provide all the
input/output services for your system when it first boots (and sometimes
later, depending on OS, but not for XP). Additionally, it also contains a
setup program which is used to set parameters used by the BIOS routines as
well as optional selections of parameters (very old machines often used
jumpers) for video, hd, PCI, etc. Generally, you have an option to 'Enter
Setup' early on in the POST process (prior to booting) which is usually to
press the 'DEL' key but can be other combinations. This allows you to see
what's up and change things there. Virtually any machine in use today has
this code in rewritable memory, the process referred to as 'flashing the
BIOS' is using a special program to rewrite this code, providing the user
with the means of eliminating bugs in it, or occasionally, increased
functionality--generally referred to as a 'BIOS upgrade'. Be advised that
this can be a risky process, should anything interrupt (such as a power
failure) the writing, you will have a machine which probably will not boot.
Some mbds have dual BIOSes, so that you have one to fall back to, should
anything go wrong. Your mbd manual, if you know where to find it, should
tell you about the process.

From the previous posts to this thread, you'd do well to go to the forum
recommended to you, and find out if this is a recognizable problem.

Hth,
J
Click to expand...

<*((((><{
(e-mail address removed)
 
Answering in more or less reverse order,
--You don't need to go to SP2 for this--it's just that SP2 contains fixes
for some of the problems people have with USB, so if you apply it, you have
(usually) fewer problems waiting for you.
--The legacy part refers to support for a USB keyboard or mouse, if you have
them. And then, it really doesn't need this once your OS is
installed--you'll have keyboard during post, but not during loading but then
again, once WXP is loaded, you don't need it anymore--which means you don't
need it. And if you don't have the USB kbd/mouse, you don't need it.
--No need for separate USB card--your 845GL chipset already has 2.0
support--6ports
--24C2, 24C4, and 24C7 would be your three 1.1 controllers, 2 ports each
--24CD is your 2.0 interface, and I would expect it to operate any port with
a 2.0 device at the appropriate speed (though it doesn't always get the
routing right)
--I *guess* that your two 'root hub' entries simply reflect the availability
of both 2.0 and 1.1 operation, but I don't *know* that they mean that. If I
ever find time, I'll try and look for that.

I was surprised to see all the posts connected to this when I checked Google
Groups--you must have been splitting this thread about ten different ways,
since this thread I entered doesn't have all the posts linked.

'bye,
J
 
Pavel,

That is a very unhelpful answer.

<*((((><{
(e-mail address removed)

In the last exciting episode on Tue, 23 May 2006 05:15:11 +0200,
 
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