Keyboards and Mouse are Not Recognized

If you are experiencing your keyboard and mouse not being recognized when connected to a KVM switch, we suggest trying the following troubleshooting steps. If the issue persists, please reach out to the TESmart Customer Service Center for further assistance. You can contact us through the chat window at the lower right or by submitting feedback. Our dedicated team of professionals is ready to help and provide after-sales support.

Applicable product models: Dual/Triple Monitor KVM Switch

HKS202-E23 (Previously HKS0402A1U)/HDK202-E23 (Previously HDK0402A1U)/
HKS202-P23 (Previously HKS0202A2U)/HKS402-P23 (Previously HKS0402A2U)/
HKV202-E23 (Previously HKV0402A1U)/HKS802-E23 (Previously HKS0802A1U/
DKS802-E23 (Previously PKS0802A10)/HKS0403A1U etc.

This article includes the following topics:

How to judge whether the keyboard and mouse are recognized by the computer?

On Windows 10 or Windows 11, you can quickly access Settings by pressing the Win + I key combination and then go to Devices Page to check if your keyboard and mouse are on the list.

On macOS, you can check the status of related devices by going to System Preferences > Keyboard & Mouse.

 

K&M.JPEG

There are two specific scenarios that may lead to the keyboard and mouse not being recognized correctly, resulting in the inability to use any buttons or functions:

Situation 1: The keyboard and mouse you've connected to the KVM switch can not be used on any input source devices.
Situation 2: The keyboard and mouse you've connected to the KVM switch can not be used on specific input source devices.
You can check detailed troubleshooting recommendations for each of these situations below.

Suggestions for situation 1:

Check whether the USBA to B cable is connected.

Firstly, Please make sure that each of your input devices has been connected to the KVM switch using a USB-A to USB-B cable. This is essential to ensure that each USB Channel between the input device and the KVM Switch can work normally to transmit keyboard and mouse signals. If the issue persists after connecting the cables, please proceed to the next troubleshooting step.

USB cable.JPEG

Confirm the keyboard and mouse compatibility.

Our KVM switches are compatible with wired keyboards and mice, as well as those with USB receivers. If your devices are exclusively Bluetooth-compatible, they may not work with our KVM switches.

Check if the Online indicator on the KVM Switch lights up after connecting the cables.

(Note: Some models may not feature an Online indicator on the front panel. In such cases, you can skip this step and proceed to the next one.)

KVM lights.JPEG

If the Online indicator does not light up, it suggests a potential issue with the USB connection between the input device and the keyboard/mouse. To figure out the specific problem, please try the following steps:
  1. If possible, please try a new USB-A to USB-B cable to connect and see if the Online indicator can light up.
  2. Please ensure the distance from the input device to the KVM Switch does not exceed 2M because a longer cable connection may affect the stability of the USB signal transmission.
  3. If the Online indicator still does not light up after the above operations, it may be the problem with the USB-B port or the Online indicator itself on the KVM Switch. In such cases, please contact us through the chat window at the lower right or by submitting feedback for further assistance.

If the Online indicator is illuminated, it indicates that the USB cable is properly connected, and the USB signal between the computer and the keyboard/mouse is transmitted normally. You can proceed to the next troubleshooting step.

Check if the dedicated keyboard and mouse ports or USB 2.0/ USB 3.0 port is broken.

Please try to connect your keyboard and mouse to the dedicated ports and to the USB 2.0/ USB 3.0 port, and check separately whether the keyboard and mouse can work normally after connection.
USB3.0 port.jpg

Test connection to USB2.0 situation .jpg

Suggestions for situation 2:

To troubleshoot the real problem in this situation where only certain input devices fail to recognize the keyboard and mouse, you can perform cross-tests using a working input device and available cables.

Please make sure that the USB-A to USB-B cables connecting the input devices to the KVM switch have been connected properly. If the issue persists, please proceed to the following troubleshooting steps.

USB cable.JPEG

Please identify and confirm which input device your keyboard and mouse can not work with normally, and which input port on the KVM this input device is currently connected to. And check if the corresponding online indicator lights up.

It has to be noted that if the KVM Switch you purchased does not feature an Online indicator, you can still follow this cross-test method. In such cases, pay attention to the functioning status of the keyboard and mouse after performing the operation.

Step 1: Attempt to ONLY interchange the connection ports on the KVM switch between the computers. Refer to the provided image for guidance. (Typically, the USB cable is bundled together with the HDMI cable, so they need to be exchanged simultaneously.)

Tip: Due to the current lack of clarity regarding your connection setup, we assume that one of your computers (referred to as Computer 1) is currently connecting to the "PC1" input ports on the KVM, and the keyboard and mouse can not work normally on this computer; Another computer (referred to as Computer 2) is connecting to the "PC2" input port on the KVM, and the keyboard and mouse can function correctly on this computer.

Computer 1--->"PC 1" input ports--->K&M Not Work

Computer 2--->"PC 2" input ports--->K&M Work

Please try to exchange the input ports connection to the KVM Switch. You can refer to the diagram below for guidance.

Swap kvm port.jpg

Cross Test Product USB Port.jpg

Step 2: Keep the result of Step 1 unchanged. Please try swapping only USB cables between computers.

See pic below for reference. (Typically, the USB cable is bundled together with the HDMI cable, so they need to be exchanged simultaneously.)

Tip: If the current status is the result① after Operation 1, which is that the keyboard and mouse do not work on Computer 1, while they can work normally on Computer 2.

Computer 1-->"PC 2" input ports-->K&M Not Work

Computer 2-->"PC 1" input ports-->K&M Work

Please try to exchange ONLY USB cables connecting the computers and the KVM Switch. You can check the pic below for guidance.

Swap cable.jpg

Cross test product USB cable.jpg

If all of the steps above cannot help you locate and resolve the problem, please contact TESmart Customer Support for further assistance. Briefly mention the steps that you’ve already tried for a faster solution.

 

Was this article helpful?
2 out of 30 found this helpful

Comments

0 comments

Please sign in to leave a comment.

Have more questions?
Submit a request
Share it, if you like it.