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PS/2 mouse port not working?

I'm using Microsoft's Wireless IntelliMouse Explorer 2.0 (PS/2 and USB compatible) with its latest drivers. The mouse does work in the USB port, but it won't in the PS/2 port. If you're wondering, I prefer to free up more USB ports so I can use other more important devices. This is why I'd rather use the PS/2 for the mouse. Now I'm not sure how to find any indication of whether or not this port is working. If anybody knows how to find out if the port is working, please inform me. And by the way, just in case, the PS/2 keyboard port does work. It's just the mouse port that's giving me trouble.

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  • 4 more comments 
  • fredbeer Apr 16, 2009

    I beleive that the link that you had provided shows that the kit is actually a hordware kit, and not a software download, and I do not have this kit. Also I don't think that it's a good idea to plug the ps/2 devices into the non-respective ports. Chances are that it could damage the motherboard (most likely permanently) and make problems worse.

  • fredbeer Apr 16, 2009

    Alright, I found something weird about this. You may find this weird too, so I'll go step-by-step so you can try to understand of what I did and what happened.

    I intend to work on the problem using 2 mice. The 2nd mouse (which was a wired ps/2 only mouse) was used as a backup in case the 1st (the original mouse that was mentioned above) failed to function. I did not make any significant changes to my system. I plugged the 2nd mouse into the ps/2 mouse port, and when I tested it IT WORKED! But, when I pluged the original mouse into the ps/2 port, NOT WORKING! And here's the weird part: when I plugged the same original mouse back to the usb port, WORKING AGAIN!

    Now if you don't get what I'm saying, it was the SAME ps/2 port that DID function the wired ps/2 only mouse, but NOT the wireless ps/2-usb mouse (which DOES function in the usb port only). Now I don't understand this, but I hope you do understand what I mentioned. So I wonder what was going on here.

  • fredbeer Apr 16, 2009

    Yes, this is EXACTLY what I use when I plug the receiver of the wireless mouse to the usb port. Even with the use of this, both the problem and the weirdness remains.

  • fredbeer Apr 16, 2009

    I'm using XP. The mouse isn't that new, it's bought a couple of years ago. The motherboard (which of coarse is the A7N8X-X) was bought in 2004, so it's not that new either. I did plug into the ps/2 port (w/adapter) and rebooted. There were no errors, but the signal from the mouse's receiver is not on. This port was working with this mouse some time ago, but now it somehow not working with this mouse (and for some reason like I said, it did work for the wired ps/2 mouse). Well, for now, it seems that I'll be using the usb port.

  • fredbeer Apr 17, 2009

    Yes, I'm using the latest mouse drivers and sp3 for xp. Even if I use the mouse switch, the receiver's signal has to be on, which at that point is still off and no indication of any connection.

  • fredbeer Apr 17, 2009

    I do have a 2nd computer, but it's a very old one and it's only running Windows 98. This mouse only works from Windows 2000 onward. I'm not worried about getting a new mouse now since it STILL works in the usb port as I already mentioned.



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Hello fredbeer,

Besides the obvious checking with your device manager, you can download a port test kit HERE. That will be able to test if it's working. The other thing you can do is switch the keyboard into the mouse port and the mouse into the keyboard port. You should get some errors, if not, one of them will work and the other won't. Hopefully, you'll get the keyboard in the mouse port to work, so you know the port is working. Also, if you have any other PS2 devices that you can test it with.

Good Luck and don't forget to leave a rating based on my solution.



Posted on Apr 15, 2009

  • 3 more comments 
  • Mark Taylor
    Mark Taylor Apr 16, 2009

    Hello fredbeer,

    I don't know where you heard that switching the keyboard to the other port will harm your motherboard, but that's not the case. It's done by millions of computer technicians in case they have a failure. But, I don't want anyone attempting something they’re not comfortable with.

    On the link, there is some hardware that you can get, but they also have the links to the software portion. But either case, Here is the basic jest of troubleshooting the PS2 port..

    Begin by opening the Windows Device Manager. Click the plus sign (+) next to Mouse and for Keyboard. You will see a list of the present PS2 devices installed on your system. If any of the devices have a yellow exclamation point icon, this indicates a configuration problem with the port. If any of the devices have a red "X," the port is disabled.

    If you see an exclamation point, click the device and then Properties to determine the problem. On the General tab of the properties dialog box, the Device Status area indicates any problems that exist with the device. If you have a driver problem, click the Driver tab and click Update Drivers to install new drivers. If a conflict is the problem, click the Resources tab and look at the conflicting devices list. Devices using the same IRQ or other settings as the PS2 are in this list. Because PS2 ports can use only a few settings, try to change the other device's conflicting settings. If the device is disabled, as indicated by a red "X" next to the device, click Enable Device. Restart the computer if directed, and try to use the port again. (NOTE: Because PS2 are built into the motherboard, you may need to use the system BIOS [Basic Input/Output System] configuration utility to change the port configuration or enable the port. Press the Del of F2 key at system startup time to access the setup program to choose the settings to adjust port.)

    If the port has no driver or conflict problem and the port still don't work, you should test the port with another piece of equipment that is also a PS2 port to determine if the port is working. Typically a keyboard will give an error code on start up, which will indicate that it's functioning, however since you are concerned about the function of the motherboard, you’ll need to find another device..

    If you don’t’ have another device, then it’s going to be very difficult to test it out. If you have another computer that you can test the mouse on its PS2 port, or even a laptop, this will help determine if the cable from the mouse housing unit is bad. You really only have few issues to determine.

    1) The Device Manager has a IRQ Conflict

    2) The Device has the wrong Driver

    3) The Device is not working correctly

    4) The Cable from the mouse housing unit is bad

    5) The Port is dead

    I’ve had mice go out on my before, and I’ve had ports go out before, the trick is determine where the problem lies.

    Good Luck Again,


  • Mark Taylor
    Mark Taylor Apr 16, 2009

    Ok, that's progress!! What it sounds like is that the cable on the wireless mouse is bad. You have to cables right? A USB and a PS2 both from the wireless reciever? So, if this is a new mouse, I'd return it the store, If it's an older mouse, well, they have adapter for $2-3 that you can plug into your USB cable and convert it to PS2 cable in order to free up your USB ports. Here's what they look like, and I mean just like this one.

    Just make sure that you get the one that you can plug your USB into and the other side should be male, just like your mouse. Most of the ones you buy are just the opposite, so make sure it looks like this one.

    Good Luck!


  • Mark Taylor
    Mark Taylor Apr 16, 2009

    Is the mouse new? I'd take it back if possible. If not, then you could always add an additional usb card to the computer to give you more ports, which sounds like you need anyway. But that's is weird! Your motherboard isn't that old, it shouldn't have any problems recongizing the adapter. Hmm.... Have your tried to insert the usb with adapter into the PS2 port then reboot the machine? Did you get any errors on boot up? Bios would show no mouse found on the boot up screen on that board. What operating system are you running?


  • Mark Taylor
    Mark Taylor Apr 17, 2009

    Have you tried the microswitch on the bottom of the mouse? Sometimes it can shift to the off position. Also, try and download the new drivers HERE. And are you on SP1 of XP? It won't work on XP without SP1. Which you can download HERE. I'm not giving up yet!


  • Mark Taylor
    Mark Taylor Apr 17, 2009

    I wish you had a second computer to try it on! But, It more likely it's the mouse, since you indicated that the PS2 port worked with the old mouse. Sounds like you need a new mouse! Best of Luck




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