can not used my wireless keyboard and mouse or somes special functions of them not work.

It's happened when you the "emulated class of KVM switches".
In short, no matter what kind of keyboards or mouses you plug in the KVM switches, emulated KVM switches will only "emulated" "assumed" that your keyboards or mouses are the "simple and standard" keyboard and mouse.

That's the reasons why your Logitech Unifying Receiver and Microsoft Wireless Receiver not work or work but just act as standard keyboard and mouse.   There are impossible for an emulator cover all kind or USB HID devices,.  So when you using this kind of KVM switches, the manufacturers will tell you
that you must put your keyboard and mouse on the assigned USB ports accordingly.   Keyboards must plug in to the keyboard port of the KVM and mouses must plug in to the mouse port of the KVM.  If you don't do so, you can not use special hot-key commands or special mouse click commands to control the KVM switches.

What a big deal for not using special keyboards or mouses ?
The emulated USB KVM switches not only do not pass the truth devices's profiles to systems connected to the KVM switches, but also limited what kind of I/O devices you can use - you can not use touch-screen monitor, drawing table, 3D mouse, Gaming mouse, medical I/O devices and devices special designed for your demanding applications - which caused the unstable and un-controlled factors of your operations.   It's really a big deal.



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