I can connect my Vorredern unreservedly: This KVM switch does not work with any combination of USB mouse and keyboard. The phenomenon of "self-life" of the keyboard, I can confirm. A replacement unit brought no improvement. The support of D-Link is unhelpful: "Cherry Keyboard G230, mouse Logitech M-BT96-A": only obtained the statement that, for example, no problems are to be expected when you have the following devices. These two devices I have not, however, and therefore can not say whether this statement is true. From this KVM switch I can only advise! Fortunately, I can return the unit. Now the search begins again.