A:Answer In my case, I have a new Dell Windows 10 desktop computer and an old desktop Windows 7 machine sharing 27" LG monitor, Logitech speaker, a keyboard and a mouse via a KVM switch purchased about 12 months ago. From the onset, the native wired Dell mouse that came with the new machine DID NOT work with the set-up, but the native Dell wired keyboard did. So I added older wired Insignia mouse and the resulting set-up worked very well. Recently I, being tired of the simplistic Dell keyboard, replaced it with a new wireless Logitech MK570 Comfort Wave keyboard + mouse. Although the new setup works, things changed as follows. The transfer of control to Win 10 machine is no longer completely automatic but it is still working in a fashion which is acceptable to me.
That is, after pressing the switch, if the Win 10 machine did not yet go to the sleep mode, the transfer of control is still automatic.
In contrast, if the Win 10 machine is already asleep, it would not wake up from any action done via the KVM switch.
However, if, after pressing the KVM switch, I would either briefly press on/off switch on the Win 10 computer or press any key on the native Dell keyboard which is now directly connected with the Win 10 machine, it would wake up and work with all the devices connected to the KVM switch. (Previously it was completely automatic.) With the new set-up both old wired Insignia mouse and the new Logitech wireless mouse work. I hope it helps.