Product Overview
The CKL DisplayPort MST KVM Switch (Model CKL-622DH) enables control of two computers from a single set of keyboard, mouse, and two monitors. It utilizes DisplayPort 1.4 MST technology to support dual extended or mirrored displays, offering resolutions up to 4K@60Hz simultaneously for dual monitors, or 4K@144Hz for a single monitor. This device streamlines your workspace and enhances productivity through versatile connectivity.
Package Contents
Please verify that all the following items are present in your package:
- 1 x CKL 2-Port DisplayPort MST KVM Switch
- 1 x Mini USB Cable + Wired Remote
- 2 x DP1.4 Cables
- 2 x USB3.0 Cables
- 1 x USB Power Adapter
- 1 x User Manual
Note: Monitor cables are not included and must be purchased separately.

This image displays the CKL KVM switch and its included accessories, ensuring you have all necessary components for setup.
Product Features
- DisplayPort 1.4 MST Technology: Supports dual extended or mirrored displays from a single DP 1.4 video source.
- Dual Monitor Output: Controls two computers with two monitors (one DisplayPort, one HDMI output per computer).
- High Resolution & Refresh Rate: Supports up to 4K@60Hz for dual monitors simultaneously, and up to 4K@144Hz for a single monitor.
- Multiple Switching Modes: Effortlessly switch between computers via front panel push button, keyboard hotkey, mouse hotkey, or wired remote.
- USB 3.0 & Audio Support: Features an integrated USB 3.0 hub for peripherals and dedicated ports for audio output and microphone input.
- Wide OS Compatibility: Plug-and-play compatibility with various operating systems including Windows, macOS, and Linux.
Device Layout
Front Panel

This image displays the front panel of the CKL KVM switch, highlighting the A/B toggle switch, indicator LEDs, Hot Key ON/OFF switch, USB 3.0 HUB ports (one for hotkey, one standard), USB keyboard (hotkey) port, USB mouse (hotkey) port, audio output, microphone input, and wired remote port.
Rear Panel

This image shows the rear panel of the CKL KVM switch, detailing the DC 5V power input, HDMI Output B, DP Output A (OUT-MST), USB 3.0 ports for PC2 and PC1, PC2 DP Input, PC1 DP Input, and the I/O power switch.
Setup Instructions
Follow these steps to correctly set up your CKL DisplayPort MST KVM Switch:
- Power Off: Ensure all computers and monitors are powered off before making any connections.
- Connect Monitors: Connect your primary monitor to the KVM switch's DP Output A (OUT-MST) and your secondary monitor to the HDMI Output B.
- Connect Keyboard & Mouse: Plug your keyboard into the dedicated USB keyboard (Hotkey) port and your mouse into the USB mouse (Hotkey) port on the front panel.
- Connect Computers (USB): Use the provided USB 3.0 cables to connect your computers' USB ports to the KVM switch's USB 3.0 input ports (PC1 IN, PC2 IN) on the rear panel. These transmit USB data for peripherals.
- Connect Computers (Video): Connect DisplayPort cables from your computers' DisplayPort outputs to the KVM switch's DP IN input ports (PC1 DP Input, PC2 DP Input) on the rear panel.
- (Optional) Audio Connections: Connect your speakers to the audio output port and your microphone to the microphone input port on the front panel, if desired.
- (Optional) Wired Remote: Connect the wired remote to its designated port on the front panel for convenient switching.
- Power On KVM: Connect the provided USB power adapter to the DC 5V input on the rear panel, then plug it into a power outlet. Turn on the KVM switch using the I/O switch.
- Power On Devices: Power on your monitors first, then power on your connected computers.

This diagram illustrates the complete connection setup, showing two computers (PC1, PC2) connected to the KVM switch via DisplayPort and USB 3.0 cables, and two monitors (Monitor A via DisplayPort, Monitor B via HDMI) connected to the KVM switch outputs. A keyboard, mouse, speaker, microphone, and wired remote are connected to the front panel.
Operating Instructions
The CKL KVM switch provides several convenient methods for switching between your connected computers:
Switching Between Computers
- Push Button Switching: Press the 'SELECT' button located on the front panel of the KVM switch. Each press will cycle to the next connected computer (PC1 or PC2). The indicator LEDs will illuminate to show which computer is currently active.
- Keyboard Hotkey Switching: Utilize specific keyboard hotkey combinations to switch. For example, double-tap the Scroll Lock key, then press '1' for PC1 or '2' for PC2. Refer to the comprehensive user manual for a complete list of hotkey commands and customization options.
- Mouse Hotkey Switching: Double-click the middle scroll wheel of your mouse to switch between computers. This feature requires the mouse to be connected to the dedicated hotkey mouse port on the KVM switch.
- Wired Remote Switching: Press the button on the wired remote control to switch between connected computers. This provides an external, accessible switching option.

This image visually represents the four available switching methods: push button on the device, keyboard hotkey commands, mouse scroll wheel double-click, and the wired remote button.
Display Modes
The KVM switch supports various display configurations for your connected monitors, leveraging MST technology:
- Mirrored Display: Both monitors display identical content, duplicating your desktop.
- Extended Display: Your desktop is expanded across both monitors, providing increased screen real estate for multitasking.
- Splicing Wall: An advanced configuration that combines multiple displays to function as a single, larger display. This mode may require specific graphics card support and software.
Ensure your graphics card drivers and operating system display settings are correctly configured to utilize the desired display mode.

This diagram illustrates the Mirrored, Extended, and Splicing Wall display modes, showing how content can be presented across two monitors.
Compatibility
The CKL KVM switch is designed for broad compatibility with various operating systems and hardware standards:
- Operating Systems: Fully compatible with Windows (XP, 7, 10), macOS, Linux, Unix, Debian, Ubuntu, Fedora, Raspbian, and other major operating systems.
- Video Standards: Supports DisplayPort 1.4, HDMI 2.0, HDCP 2.2, HDR 10, and Dolby Vision for high-quality video transmission.
- USB: Features USB 3.0 for high-speed peripheral connectivity.
For optimal performance and to achieve maximum resolutions and refresh rates, ensure your graphics cards, monitors, and all connecting cables support the same level of specifications.

This image displays logos of various operating systems, indicating the broad compatibility of the KVM switch with Windows, macOS, Linux, and other systems.
Troubleshooting
If you encounter issues with your KVM switch, please refer to the following common troubleshooting steps:
- No Display or Incorrect Resolution:
- Ensure all DisplayPort and HDMI cables are securely connected at both the KVM switch and your monitors/computers.
- Verify that your graphics card and monitors are capable of supporting the desired resolution and refresh rate.
- Test monitors by connecting them directly to your computers to confirm they function independently.
- Restart the KVM switch and all connected computers.
- Keyboard or Mouse Not Responding:
- Confirm that the keyboard and mouse are connected to the dedicated hotkey ports on the KVM switch's front panel.
- Check the USB cable connections from your computers to the KVM switch.
- Try connecting the keyboard/mouse directly to the computer to verify their functionality.
- Some specialized gaming keyboards or mice may have compatibility limitations with KVM hotkey functions and might require direct connection or specific drivers.
- Audio Issues:
- Verify that your speakers and microphone are correctly connected to the KVM switch's audio ports.
- Check your computer's audio output settings to ensure the KVM switch's audio device is selected as the default.
- Switching Delay:
- A brief delay during switching is normal as the system re-establishes video and USB connections. If the delay is excessive, ensure all cables are high-quality and properly seated.
- Mac M1/M2 Extended Display Issues:
- This KVM switch utilizes MST (Multi-Stream Transport) technology. Some Mac M1/M2 models may have limited or no support for MST for extended displays, potentially resulting in only mirrored displays. Please verify your specific Mac model's MST compatibility.
For further assistance, please consult the full user manual or contact CKL customer support.
Specifications
| Feature | Detail |
|---|---|
| Model | CKL-622DH |
| Brand | CKL |
| Connectivity Protocol | DisplayPort 1.4, HDMI 2.0, USB 3.0 |
| Video Inputs | 2 x DisplayPort 1.4 |
| Video Outputs | 1 x DisplayPort, 1 x HDMI |
| Max Resolution (Dual Monitor) | 4K@60Hz (simultaneously) |
| Max Resolution (Single Monitor) | 4K@144Hz |
| USB Ports | USB 3.0 (for keyboard, mouse, and hub) |
| Audio Support | Yes (Audio Out, Mic In) |
| Switching Methods | Push Button, Keyboard Hotkey, Mouse Hotkey, Wired Remote |
| Power Supply | DC 5V |
| Material | Metal |
| Color | Black |
| Specification Met | CE, HDMI2.0, DP 1.2, HDCP 2.2, HDR 10, Dolby Vision, USB 3.0 |
Maintenance
To ensure the longevity and optimal performance of your CKL KVM switch, follow these maintenance guidelines:
- Environment: Keep the KVM switch in a dry, well-ventilated area. Avoid exposure to direct sunlight, excessive heat, or moisture.
- Cleaning: Clean the device periodically with a soft, dry cloth. Do not use liquid cleaners, aerosols, or solvents, as these may damage the casing or internal components.
- Cable Management: Ensure all cables are neatly organized and not under excessive strain. This prevents damage to the ports and cables over time.
- Power Disconnection: Disconnect the power adapter from the KVM switch when it will not be in use for extended periods, such as during vacations or long breaks.
Warranty and Support
CKL products are engineered for reliability and high performance. For detailed warranty information, technical assistance, or any product-related inquiries, please refer to the official CKL website or contact their dedicated customer service team.
You can find additional resources and product information by visiting the CKL Official Store: CKL Official Store.
Please retain your proof of purchase, such as your receipt or order confirmation, as it may be required for warranty claims or support requests.





