KVM switch control

Chances are that the distance between the keyboard & the PC computer is attenuating the signal of the keyboard below the threshold (or level) required for interfacing with the PC computer.

Perhaps a shorter KVM cable between the KVM unit & the PC computer could be helpful.

this is not uncommon. many kvm switches cannot work with those types of wireless mice. the reason for this is due to connection codes. these mice require a connection to secure the use with each computer. you can attempt to do this with your setpoint software. located in C:\Program Files\Logitech\SetPointP you will find the program CONNECT.EXE
run this to redo your mouse connection. i will however inform you that even if this works there is a large chance that upon switching to the next pc the mouse wont work and you will need to repeat this process with each pc switch everytime you toggle pcs.

rule of thumb. if the mouse is wireless don't use it with a kvm.

As a wild guess, it sounds like a static discharge MIGHT be affecting the switcher causing it to crash.

Try increasing your humidity to 40% and grounding yourself before touching the keyboard... This is the season for these static electricity problems... get nipped all the time and you MAY not even feel it to be enough to zap the switch.

1. Power down everything
2. Turn on the KVM
3. Turn on each unit

please give me a full forum of kvm ok

you need to set the temp selector on the monitor to the cooler temp.  It's in the monitor set-up controls. 

Most KVM switches does not have a driver. Because these devices are simply Plug-n-Play and does not require any driver installation.

What you need to do is to check the system requirements for every KVM switches before purchasing it.

Here's the fact:
- PS/2 KVM switches are designed for PS/2 computers keyboard and mouse

- USB KVM switches are designed to work with USB. Meaning, if you're going to use an adapter (PS/2 to USB), there's a big chance that your KVM might not work correctly.

- Most KVM switches does not work properly with docking stations.

- KVM switches are tested to work with wired keyboards and mice.

- You have to make sure that everything is properly connected to the computers if you want your KVM switch function properly.

- Lastly, update the USB driver of your computers (XP and Vista).

- Most KVMs has a firmware upgrade that you may find in manufacturer's Web site.

Username: admin
Password: password or 1234

The Compaq 4110 KVM switch was actually manufactured by Apex which is now part of Avocent. Your switch is Compaq's rebranding of the Apex/Outlook EL-80DT from Avocent.

The key to display the KVM switch menu should be PrintScreen. Here is a link to the user manual:
ftp://ftp.avocent.com/public/product-upgrades/Outlook/EL40-80DT/OL_DT_UG.pdf
Your answer seems to be on page 34.

HP Parts supposedly still stocks the EPROM for this model, so you can try to order it from the HP Parts Store. Check for part 340579-001.