DKS202-M24: Switching outputs while in full Mode A or Mode B
Hi, so before I ask this question, I want to let you know that I was able to replicate this once and I cannot figure out how to do it again.
I bought DKS202-M24, and I have three monitors.
I have a windows laptop and a desktop PC.
With Mode A, I am connected to desktop PC, and have two monitor output and third monitor always showing the desktop PC.
With Mode B, I am connected to windows laptop, I see two monitors from the laptop, and third monitor always showing desktop PC.
My hotkey to switch keyboard/mouse output is Alt, so if I do a split Mode A + Mode B between the two monitors, I can double-tap Alt to switch the keyboard and mouse.
If I am in Mode B (windows laptop), two monitors showing laptop and third monitor showing Desktop PC, how do I switch output to the third monitor that has Desktop PC so I can use the third monitor to control my desktop PC while still seeing laptop PC monitors from full Mode B ?
I was able to replicate this functionality once or twice before, but I cannot make this work on demand. If I am in full Mode B, or full Mode A, and I double tap Alt, it does not switch keyboard/mouse output to the other computer. What am I doing wrong ?
Thank you
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Offizieller Kommentar
Hello,
Thank you for describing your setup in detail — it really helps us understand the issue you're encountering.
About the Issue
The TESmart DKS202-M24 is a KVM switch designed to support 2 computers and 2 monitors, with two typical display modes:
- Dual-Screen Mode (PC1 or PC2): Both monitors display the same computer.
- Split-Screen Mode: One monitor shows PC1, and the other shows PC2.
In your actual setup:
Two monitors are connected through the KVM;
A third monitor is directly connected to your desktop PC (not via the KVM).
This 3-monitor configuration introduces a unique challenge:
When the KVM is in Dual-Screen Mode and both displays are switched to the laptop, the system assumes that the desktop PC is not being used or viewed. Based on this built-in logic, the KVM will disable the ability to switching keyboard/mouse control focus to the desktop.
So when you press the hotkey in this state, it will not switch the keyboard and mouse. This is not a malfunction, but rather a result of the product's original logic design.
Why It Occasionally Worked Before
You mentioned that it worked once or twice before — having two monitors show the laptop while the third (direct-connected) monitor displayed the desktop, and still being able to control the desktop via keyboard/mouse.
This likely happened because you were in Split-Screen Mode at the time:
When your setup is in split Mode A + Mode B, and you hope to switch to Mode A or Mode B, using Right Ctrl + Right Ctrl + ←/→ or the remote control’s A/B + 1/2 buttons, the KVM will stay in split mode. In this case, it assumes both PCs are active, and the Right Alt + Right Alt hotkey remains available for switching keyboard and mouse.
However, if you used the Select button on the KVM front panel, Right Ctrl + Right Ctrl + 1/2 hotkey, or the remote’s 1/2 button to switch to Mode A or Mode B, the KVM will turn to Dual-Screen Mode. In this state, the hotkey Right Alt + Right Alt is disabled by design.
Solution
To better support your specific 3-monitor setup, we can offer you a custom firmware upgrade. Once applied, it will enable the following:
- The Right Alt + Right Alt hotkey will remain active at all times, whether you're in Dual-Screen or Split-Screen mode;
- Fully compatible with your setup: two monitors via KVM + one directly connected to the desktop PC, with full keyboard/mouse control flexibility.
We’ve submitted your request to our technical team. Please allow up to 3 business days for the custom firmware to be prepared. We will contact you as soon as it's ready, along with instructions for installation.
If you have any further questions or suggestions, feel free to reach out. We truly appreciate your feedback and your support of TESmart products!
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Hi, following up on this post if you have any updates?
Thank you
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ubqtous
Thank you for your patience.
We’re pleased to inform you that the upgrade package has been successfully prepared and tested.
You may download the upgrade tool and detailed instructions from the link below:If you have any questions or need further assistance during the upgrade process, please don’t hesitate to contact us. We’re happy to help.
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This worked great! I am a super happy customer! Thank you so much :) Appreciate you.
Leaving an outstanding review for you guys.
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Hi, I just realized that after flashing this custom firmware, my USB out only works for the USB IN 1, but not USB IN 2.
It seems that my USB OUT (either port 1 or 2) is in “always connected” state with USB IN 1.
Could you please fix this while retaining the functionality with Double-Alt working on third monitor ?
Thank you so much.
Greg
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Dear Greg,
Thank you for reporting this issue.
We have forwarded your feedback regarding the USB behavior after the custom firmware update to our R&D engineering team for review. This will be investigated while keeping the existing Double-Alt functionality on the third monitor intact.
We appreciate you bringing this to our attention and will update you once we have further findings.
Best regards,
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Hi, wanted to check in for any progress update on this?
Thank you
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Hi ubqtous,
Thank you very much for your attention and feedback.
We truly value your suggestions. Our upcoming has been specifically improved to address the issues previously mentioned, and we believe these upgrades will significantly enhance the overall user experience.
We sincerely appreciate your continued support and interest. Please feel free to reach out if you have any further questions.
Thank you again.
Best regards,
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Hi do you have an Estimated time when you can deliver this firmware?
Thank you
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Hello, do you have an update on this?
Thank you
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Can you please provide an update on this?
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Why are you ignoring me ?
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Hello,
First of all, we sincerely apologize for the delayed response due to the recent restructuring of our forum.
We have prepared a new firmware update for your device. Please try upgrading to this version and check whether it resolves the issue where the computer connected to PC2 cannot use USB devices.
If the issue still persists after the update, please help us verify the following:
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Check the Audio indicator light
- Please confirm whether the Audio LED is green.
- Green indicates that the keyboard, mouse, USB, and audio focus are currently assigned to PC2.
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Keyboard & mouse test
- If the Audio LED is green but USB is still not working, please check whether the keyboard and mouse connected to the dedicated keyboard/mouse ports are functional on PC2.
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USB device recognition
- Please provide a screenshot showing the USB device detection status:
- On Windows:
Settings > Bluetooth & devices > View more devices
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Input port cross-test
- To rule out a possible issue with the USB IN 2 port, please perform a cross-test:
- Connect the PC currently on PC1 (including its USB A-B cable and DP cables) to the PC2 input port
- Connect the PC currently on PC2 (including its cables) to the PC1 input port
- Then check whether the issue still occurs specifically on the PC connected to PC2 input
- To rule out a possible issue with the USB IN 2 port, please perform a cross-test:
Please let us know the results after testing these steps, and we will continue assisting you further.
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Check the Audio indicator light
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