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Laptop not recognizing external keyboard & mouse using USB to PS2 adapter

Posted on 2007-09-30
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Last Modified: 2013-12-09
I am trying to use a D-Link DKVM-4K KVM switch to connect my home desktop running Windows XP and my Gateway laptop M-685E running Vista Business to a common monitor, keyboard and mouse.  Since the KVM cables use PS2 connections and the laptop only has USB connections I am forced to use a PS2  to USB adapter to the laptop.  When I first connected things, everything worked fine.  However, I take the laptop to work and I am now trying to connect the KVM setup and I cannot get the keyboard and mouse to work with the laptop (video switching works fine).  I have tried another keyboard and mouse connected directly to the laptop through the adapter and the laptop will not recognize them, either, so the problem must be in the laptop not recognizing the peripherals through the USB port.  I have tried rebooting with the devices connected and nothing changes.  Also, when I plug the devices in, no recognition takes place.  Is this normal for keyboards and mice?  

Are there some troubleshooting tips you can give me regarding this problem>

Thanks in advance!
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Question by:Gregg011299
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rid earned 375 total points
ID: 19989230
PS/2 to USB is tricky at best. Going through a KVM switch requires good luck... I really think you should save yourself a headache and try some other solution...

On the surface it gives the impression of some kind of misinterpretation of what kind of devices that are hooked up to the USB ports, and that should be a VISTA driver problem. You may try to uninstall and reinstall the USB controller and see if you get the system to handle normal devices (mouse, KB, memory stick) that are connected directly to the USB port(s).

A KVM switch with USB may be a better solution, as the USB to PS/2 adaptors seem to cause a lot of problems, generally speaking.
/RID
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Author Comment

by:Gregg011299
ID: 20124124
Sorry about the delay in responding.  I was hoping for a dfferent answer, but RID is most likely correct.  However, I did try another adapter and the KVM switch is working fine now.  I believe the original adapter may have been bad, as it did not work on another PC where I was just trying to connect a PS2 keyboard directly to a PC without PS2 connections.  But, I had used the same adapter earlier with no problems and it was new.  I need to do more testing.  Thanks!
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