Network Speed Problem

[AA Smith]

In my 6-computer LAN (Workgroup) 5 of the computers have 3COM NIC 3C905C-TXM
10/100 PCI Network Interface Cards. I recently discovered that 3 of those 5
computers are running at 100 mbps network speed (transfer rate,) yet the
other two are running at only 10 mbps. I don't understand why they aren't
all running at 100 mbps. They're all running WindowsXP Pro. All but one is
running on ASUS P3B-F motherboards with Intel 450 MHz processors. The 5th
(which is one of the 3 running at 100 mbps) has an ASUS more up-to-date ASUS
motherboard with an Intel 733 MHz processor.

Why do the 2 computers that are running at 10 mbps not run at 100 mbps?
And, is there anything that I can do to make them all run at 100 mbps?

I shall greatly appreciate your feedback on this.
--
With kindest regards,

Dick Smith

[Steve Winograd [MVP]]

In article >, "AA Smith"
> wrote:
>In my 6-computer LAN (Workgroup) 5 of the computers have 3COM NIC 3C905C-TXM
>10/100 PCI Network Interface Cards. I recently discovered that 3 of those 5
>computers are running at 100 mbps network speed (transfer rate,) yet the
>other two are running at only 10 mbps. I don't understand why they aren't
>all running at 100 mbps. They're all running WindowsXP Pro. All but one is
>running on ASUS P3B-F motherboards with Intel 450 MHz processors. The 5th
>(which is one of the 3 running at 100 mbps) has an ASUS more up-to-date ASUS
>motherboard with an Intel 733 MHz processor.
>
>Why do the 2 computers that are running at 10 mbps not run at 100 mbps?
>And, is there anything that I can do to make them all run at 100 mbps?
>
>I shall greatly appreciate your feedback on this.

Do those 2 computers connect to hub or switch ports that support 100
mbps speed?

Try switching cables around. An improperly wired cable can work OK at
10 mbps but not work at all at 100 mbps.

The cards might have their network cards configured for 10 mbps speed.
If there's a 3COM utility program that came with them, run the program
and configure the cards for 100 mbps. If there isn't a program, set
the speed as shown here:

Windows XP Network Troubleshooting - Problems with Network Cards
http://www.practicallynetworked.com/sharing/troubleshoot/networkcard.htm
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com

[AA Smith]

Thanks so much, Steve! Come to think of it those 2 computers probably are
on a hub, rather than the router. I'll check all of your suggestions out &
let you know what I find.

Again, thanks! I really appreciate your help.
--
With kindest regards,

Dick Smith
"Steve Winograd [MVP]" > wrote in message
...
> In article >, "AA Smith"
> > wrote:
> >In my 6-computer LAN (Workgroup) 5 of the computers have 3COM NIC
3C905C-TXM
> >10/100 PCI Network Interface Cards. I recently discovered that 3 of
those 5
> >computers are running at 100 mbps network speed (transfer rate,) yet the
> >other two are running at only 10 mbps. I don't understand why they
aren't
> >all running at 100 mbps. They're all running WindowsXP Pro. All but one
is
> >running on ASUS P3B-F motherboards with Intel 450 MHz processors. The
5th
> >(which is one of the 3 running at 100 mbps) has an ASUS more up-to-date
ASUS
> >motherboard with an Intel 733 MHz processor.
> >
> >Why do the 2 computers that are running at 10 mbps not run at 100 mbps?
> >And, is there anything that I can do to make them all run at 100 mbps?
> >
> >I shall greatly appreciate your feedback on this.
>
> Do those 2 computers connect to hub or switch ports that support 100
> mbps speed?
>
> Try switching cables around. An improperly wired cable can work OK at
> 10 mbps but not work at all at 100 mbps.
>
> The cards might have their network cards configured for 10 mbps speed.
> If there's a 3COM utility program that came with them, run the program
> and configure the cards for 100 mbps. If there isn't a program, set
> the speed as shown here:
>
> Windows XP Network Troubleshooting - Problems with Network Cards
> http://www.practicallynetworked.com/sharing/troubleshoot/networkcard.htm
> --
> Best Wishes,
> Steve Winograd, MS-MVP (Windows Networking)
>
> Please post any reply as a follow-up message in the news group
> for everyone to see. I'm sorry, but I don't answer questions
> addressed directly to me in E-mail or news groups.
>
> Microsoft Most Valuable Professional Program
> http://mvp.support.microsoft.com