D-Link Support Email 1

From: D-Link
To: Me

Dear Customer,

Your Request:

When just the mouse is plugged into the KVM switch, it works fine. However, if I plug one of two USB keyboards into the switch, both the mouse and keyboard stop responding altogether. Though I can still switch through the screens of each computer using the button on the switch. The keyboards both work when connected directly to the computer(s).

has been answered as follows:


Dear Adam,

We appreciate you writing to us.

With reference to your email it seems that, the mouse and keyboard stop responding altogether when you plug one of two USB keyboards into the switch. But to kindly inform you, the USB port on the switch is not designed for the keboard. It is designed only for devices such as flash drives, from which you can share files or folders in the network. And hense when plugged into the USB port on the switch can stop the mouse from working.

For any further clarifications, kindly revert back to us.

D-Link Technical Support Team.

We hope that this answers your question and that your request is now resolved.
This information is also available through our Support Portal at http://service.dlink.biz

Regards - your D-Link Support Team

P.S. If you have further questions regarding this request,
please reply to this eMail without modifying the subject text.

D-Link Support Email 2

From: Me
To: D-Link

If the switch is not designed for a keyboard, then why does the USB port have a keyboard symbol above it? And why is it called a KVM switch, which means KEYBOARD, Video, and Mouse? The website I bought the product from also said that it was suitable. Read the product description at:


And this is an extract from the D-Link website:

"USB KVM Switch For 4 PCs
The D-Link DKVM-4U KVM switch is a handy device that allows you to control up to 4 PCs using only one monitor, keyboard and mouse. The monitor and the two input devices are connected directly to this KVM switch and not to the client computers. For office users with a need for several PCs, this KVM switch box eliminates the need for several monitors, keyboards and mice, saving the money and desktop space. The DKVM-4U is also a cost effective solution for control of several servers in a computer room, allowing an engineer to handily manipulate all connected computers from a single monitor, keyboard and mouse."

I think it's fairly safe to assume that this product is being advertised as supporting a keyboard. If you maintain that this product is not suitable, then do you do any other products that suit my needs? And what options do I have regarding the existing purchase I have made?


D-Link Support Email 3

From: D-Link
To: Me

Dear Adam, We apologise for the wrong information forwarded in the previous correspondence by the last technician.

The USB ports on the DKVM-4U, indeed, are meant for connecting Keyboard and Mice with a USB interface, as advertised.

You seem to be able to get the USB mouse to work fine all alone. However, connecting a USB keyboard hangs up both the USB devices (Keyboard and the mouse).

For this observed behavior, try the following:

a. Connect the USB keyboard first.
b. Connect the USB mouse next, and now observe if the issue repeats.

If the issue persists, connect the mouse first and then the keyboard and press SCROLL LOCK + SCROLL LOCK + M on the keyboard in quick succession. This hotkey command will serve to reset the attached peripherals devices. Following this, cold start (physical reboot) both your attached CPUs and check.

Kindly update us further on whether the above helps rest your issue.

Best regards,

D-link UK Technical Support Team

D-Link Support Email 4

Coming soon... I hope :S