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USB conflicts problem

RichardR

Master Poster
Joined
Nov 21, 2001
Messages
2,274
I recently bought a new Dell Dimension 8400 desktop PC. Great machine, except I’m having problems with USB conflicts.

Here is the problem. I have an external Maxtor 80 GB hard drive and a Memorex 0.5 GB thumb drive. The PC can see either one of these devices when they are plugged into a USB port by themselves. When I plug them both in together, the thumb drive disappears – it cannot be seen by the PC (I get the message that I need to install the driver).

I have the exact same problem with my two printers. I can plug in either my HP color printer or my Brother laser printer, and they are both seen by the PC and work perfectly when plugged in alone. When I try to plug them in at the same time, the Brother is not seen – the error message is (again) that it lacks a driver (although the drivers are installed).

The Maxtor external drive and Memorex thumb drive are less than two months old, did not come with driver disks (thumb drive doesn’t need one), and worked perfectly together in my old PC. The Brother laser is less than 2 months old; the HP printer is about 3 years old. I have driver disks for both. They both worked perfectly together in my old PC. I’ve tried plugging these devices into different USB ports (the new PC has 8). No difference. The problem is not the USB ports and it is not the devices or the lack of drivers.

I have spent about 20 hours on the phone with support from both Microsoft and Dell. Finally, a level 2 technician (so she said) from Dell said the problem could not be solved, and they sent me a replacement PC. I got this yesterday, and the first thing I did was to try the two disk drives and got the exact same problem. (I can’t tell if the printer problem is the same: this PC arrived with a non-functioning CD drive so I can’t load the drivers!) I can return both PCs to Dell for a full refund, but would keep the Dell if I could get these problems solved. I could keep it and unplug one device when I need to use the other, but that defeats the purpose of having 8 USB drives. It seems a little strange to me that a name brand like Dell has this problem.

The Dell is a P4 at 3.2 GHz and 1 GB of RAM. It runs Windows XP Home Edition. I have been through all the obvious stuff with the Dell technicians.
 
We have about 5000 Dells of various models, and I can promise you they are not strangers to USB problems.

Something you might try is attaching via a USB minihub with a power supply and see if the problem goes away.

The other problem I've noticed with some of the external USB drives is that they really like those shielded cables they come with, don't use substitutes.
 
Things that make you go HMMMM

I was going to ask if you were using a USB hub to connect both or plugging in directly to the computer. But then I thought, which operating system on previous computer recognized both. I am not a fan of XP home, does funny things that pro doesn;t in regard to problems such as you have put forth.

I liken XP hone to Win98....enough to get you going, but just enough to piss you off.
 
USB ports can screw up badly for me too. I have an MSI motherboard, and although it has six USB ports, the drivers can't ever seem to even get the ports going ok without anything connected. I have an external drive that has two USB connectors. I presume this is so it can draw current from two ports, if one cannot supply enough power.

The powered hub, with a decent power supply, sounds like a good try. Of course, it will cost you, and a brand new Dell should just work ok anyway. And you knew before they even sent it out that it would do exactly the same thing, didn't you.
 
Kopji said:
We have about 5000 Dells of various models, and I can promise you they are not strangers to USB problems.

Something you might try is attaching via a USB minihub with a power supply and see if the problem goes away.

The other problem I've noticed with some of the external USB drives is that they really like those shielded cables they come with, don't use substitutes.
I tried it with a hub I had that does not have a separate power supply and it still doesn’t work. Does the hub have to be powered for this to work?

What make would you recommend instead of Dell? Dell seems to be everybody’s best buy.
 
Re: Things that make you go HMMMM

LJRuss said:
I was going to ask if you were using a USB hub to connect both or plugging in directly to the computer. But then I thought, which operating system on previous computer recognized both. I am not a fan of XP home, does funny things that pro doesn;t in regard to problems such as you have put forth.

I liken XP hone to Win98....enough to get you going, but just enough to piss you off.
My other PC ran Windows 2000 Professional.

I just took the two disk drives to a friend’s house where he runs XP Professional, and it worked fine there.
 
a_unique_person said:
And you knew before they even sent it out that it would do exactly the same thing, didn't you.
Actually, I thought the new one would work. But then I am an optimist by nature.
 
Does the hub have to be powered for this to work?

Yeah. Something to do with USB power management. Dell actually confirms this problem on their forum site if you dig long enough. Not all models though.

An external powered hub is about $10 (US)

Belkin makes an internal USB card too, about $15. If you get one make sure it's USB 2.0 and not 1.1. For some reason there are still both versions out there...

HP is a good brand.
Whatever your friend has is a good brand...

I presume your board BIOS is updated. This is easy to do on a Dell and always worth checking if you have any kind of weird issue.

If you're in SF you live near one of the world's biggest geek Mecca's in Fry's Electronics. They'd have something.
 
Kopji said:
Does the hub have to be powered for this to work?

Yeah. Something to do with USB power management. Dell actually confirms this problem on their forum site if you dig long enough. Not all models though.

An external powered hub is about $10 (US)
Yep, the external powered hub did the trick. Thanks for your help.

I’m still amazed that a brand new Dell needs this “patch” to make it work, but then I guess nothing’s perfect.
 
Kopji said:
Does the hub have to be powered for this to work?

Yeah. Something to do with USB power management. Dell actually confirms this problem on their forum site if you dig long enough. Not all models though.

An external powered hub is about $10 (US)

Belkin makes an internal USB card too, about $15. If you get one make sure it's USB 2.0 and not 1.1. For some reason there are still both versions out there...

HP is a good brand.

HP used to be a good brand. Their current crop of consumer PCs are just rubbish, as are their printers. Avoid them like the plague.
 

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