USB port problem

mixer107 · 08-06-2003, 08:52 PM

I have 4 USB ports (2 front, 2 back) on my computer running XP Pro. The 2 ports on the front work okay, but the 2 ports in the rear do not work. The two ports in the rear do not respond to anything that I plug into it.

I can see the drivers under the device manager and they indicate that there is no problem. I have also removed and reinstalled the USB drivers, but there is no difference. Is there anything else I can try?

Hoser · 08-06-2003, 09:47 PM

Is this a recent problem? The wires connecting the ports to the motherboard can be connected backwards. The wires to the USB ports on my case aren't marked. They can be connected to the motherboard two different ways. The only way to know if they're connected right is to plug a USB device in and see if it works.

Maarchk · 08-07-2003, 09:49 AM

On my computer, you can turn on "fast processing" or something like that which is meant to devote more resources to gaming and the task at hand. To do this, it changes the bus speed and among other things, disables the usb ports in the back of my computer. I have an amd 2000 and a kt-333 mobo, and the bios allows me to turn on and off this feature. the thing is, even when the feature is turned back off, the usb ports are left disabled until i re-enable them.
I dont know if this will help, but it stumped me for quite awhile. Good luck

mixer107 · 08-07-2003, 05:39 PM

The two USB ports in the back are hard-wired into the motherboard, so I don't think they are connected backwards.

I bought this computer as a bare bones and got everything running, but this is the first time I ever tried to plug a device into the USB ports in the back. Could the USB ports in the back just be defective?

CynJon · 08-07-2003, 06:23 PM

Check in BIOS to ensure that all your USB ports are enabled. I have a Soyo motherboard that, for some reason, shuts off my USB ports any time I go into BIOS, even if I don't make any changes. You can usually select which USB ports you want turned on, maybe the setting got changed somehow.

mixer107 · 08-10-2003, 11:43 AM

I checked the BIOS to make sure that the USB ports were enabled. For some reason it shows 6 USB ports enabled instead of the 4 available on my system. I changed it to 4 ports, but there was no difference.

I also looked in the BIOS to see if there was anything like "fast processing" for things like games, but I didn't find much. The motherboard I have is a Matsonic MS9337C.

08-06-2003, 08:52 PM	#1
mixer107 Lieutenant Join Date: May 2003 Location: Bay Area, CA Posts: 223	USB port problem I have 4 USB ports (2 front, 2 back) on my computer running XP Pro. The 2 ports on the front work okay, but the 2 ports in the rear do not work. The two ports in the rear do not respond to anything that I plug into it. I can see the drivers under the device manager and they indicate that there is no problem. I have also removed and reinstalled the USB drivers, but there is no difference. Is there anything else I can try?

08-07-2003, 09:49 AM	#3
Maarchk Rear Admiral Upper Half Join Date: Jul 2000 Location: Where the east meets the west. Posts: 3,066	Do you have anything set up in bios? On my computer, you can turn on "fast processing" or something like that which is meant to devote more resources to gaming and the task at hand. To do this, it changes the bus speed and among other things, disables the usb ports in the back of my computer. I have an amd 2000 and a kt-333 mobo, and the bios allows me to turn on and off this feature. the thing is, even when the feature is turned back off, the usb ports are left disabled until i re-enable them. I dont know if this will help, but it stumped me for quite awhile. Good luck __________________ "The girl is crafty like ice is cold." "I left my heart in san francisco... And my liver at Moe's Tavern." A real friend is one who listens to you as much as they talk to you.

08-07-2003, 06:23 PM	#5
CynJon Commander Join Date: Apr 2002 Location: The middle of the country Posts: 1,424	Check in BIOS to ensure that all your USB ports are enabled. I have a Soyo motherboard that, for some reason, shuts off my USB ports any time I go into BIOS, even if I don't make any changes. You can usually select which USB ports you want turned on, maybe the setting got changed somehow. __________________

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08-06-2003, 09:47 PM	#2
Hoser Commander Join Date: Apr 2000 Location: Omaha, NE, United States Posts: 1,275	Is this a recent problem? The wires connecting the ports to the motherboard can be connected backwards. The wires to the USB ports on my case aren't marked. They can be connected to the motherboard two different ways. The only way to know if they're connected right is to plug a USB device in and see if it works.

08-07-2003, 05:39 PM	#4
mixer107 Lieutenant Join Date: May 2003 Location: Bay Area, CA Posts: 223	The two USB ports in the back are hard-wired into the motherboard, so I don't think they are connected backwards. I bought this computer as a bare bones and got everything running, but this is the first time I ever tried to plug a device into the USB ports in the back. Could the USB ports in the back just be defective?

08-10-2003, 11:43 AM	#6
mixer107 Lieutenant Join Date: May 2003 Location: Bay Area, CA Posts: 223	I checked the BIOS to make sure that the USB ports were enabled. For some reason it shows 6 USB ports enabled instead of the 4 available on my system. I changed it to 4 ports, but there was no difference. I also looked in the BIOS to see if there was anything like "fast processing" for things like games, but I didn't find much. The motherboard I have is a Matsonic MS9337C.

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