1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your CKL 2x2 KVM Switch. This device allows you to control two computers using a single set of keyboard, mouse, and two monitors, supporting HDMI 2.0 with resolutions up to 4K at 60Hz. Please read this manual thoroughly before use to ensure proper setup and functionality.
2. Package Contents
Please verify that all items are present in your package:
- 1 x CKL 2x2 KVM Switch (Model 922HUA-1A)
- 2 x USB A-male to B-male cables
- 4 x HDMI cables
- 1 x DC 5V Power Adapter
- 1 x User Manual (this document)
Image: Package contents and product dimensions.
3. Product Overview
3.1 Front and Back Panels
Familiarize yourself with the ports and indicators on the KVM switch:
Image: Front and back panel layout with port labels.
Front Panel:
- SELECT Button: Used to manually switch between connected computers.
- Indicator LEDs (1, 2): Show which computer is currently selected.
- Hot Key ON/OFF Switch: Enables or disables keyboard hotkey switching.
- USB Mouse/Keyboard (Hotkey) Ports: Dedicated USB 2.0 ports for keyboard and mouse, supporting hotkey functions.
- Audio Output: 3.5mm jack for connecting speakers or headphones.
Back Panel:
- ON/OFF Switch: Main power switch for the KVM unit.
- DC5V Power Input: Connect the provided power adapter here.
- Wired Remote Port: For connecting an optional wired remote control (not included).
- HDMI Output (OUT A, OUT B): Connect your two monitors here.
- PC1/PC2 HDMI Input (A, B): Connect HDMI cables from Computer 1 and Computer 2 to these ports. Each computer requires two HDMI connections for dual monitor support.
- PC1/PC2 USB 2.0 Input: Connect USB A-male to B-male cables from Computer 1 and Computer 2 to these ports.
4. Setup Instructions
Follow these steps to connect your CKL KVM switch:
Image: Detailed connection diagram for the KVM switch.
- Power Off Devices: Ensure all computers and monitors are powered off before beginning the connection process.
- Connect Monitors: Connect your two monitors to the KVM switch's HDMI Output (OUT A, OUT B) ports using HDMI cables.
- Connect Computers (Video): For each computer (PC1 and PC2), connect two HDMI cables from the computer's video outputs to the corresponding PC HDMI Input (A, B) ports on the KVM switch. Note: Each computer requires two HDMI outputs for dual monitor functionality. Adapters (e.g., DisplayPort to HDMI) may be necessary if your computer lacks sufficient HDMI outputs.
- Connect Computers (USB): Connect a USB A-male to B-male cable from a USB port on each computer (PC1 and PC2) to the corresponding PC USB 2.0 Input ports on the KVM switch.
- Connect Keyboard and Mouse: Connect your USB keyboard and mouse to the dedicated USB Mouse/Keyboard (Hotkey) ports on the front panel of the KVM switch. If using a wireless keyboard/mouse with a single dongle, connect the dongle to one of these ports.
- Connect Audio (Optional): If desired, connect speakers or headphones to the Audio Output port on the front panel.
- Connect Power: Plug the DC 5V Power Adapter into the DC5V Power Input on the back of the KVM switch, then plug the adapter into a power outlet.
- Power On: Turn on the KVM switch using the ON/OFF Switch on the back panel. Then, power on your monitors and computers.
Ensure all connections are secure. Your computers should detect the connected monitors and USB devices.
5. Operating Instructions
The CKL KVM switch offers multiple methods for switching between connected computers:
Image: Four available switching modes.
5.1 Switching Modes
- Push Button Switching: Press the SELECT button on the front panel of the KVM switch to cycle between Computer 1 and Computer 2. The corresponding LED (1 or 2) will illuminate.
- Keyboard Hotkey Switching: With the Hot Key ON/OFF switch set to ON, you can use keyboard commands. The default hotkey sequence is to double-tap the Ctrl key, then press the number corresponding to the desired computer (e.g., 1 for PC1, 2 for PC2), and finally press Enter. For example, Ctrl, Ctrl, 1, Enter.
- Mouse Switching: Double-click the scroll wheel of your mouse to switch between computers.
- Auto Scan Switching: This mode allows the KVM to automatically cycle through connected computers at a set interval. Refer to the full user manual for specific hotkey commands to activate and configure auto scan.
- Wired Remote (Optional): If you have an optional wired remote, connect it to the dedicated port on the back and use its button to switch.
6. Compatibility
The CKL 2x2 KVM Switch is designed for broad compatibility with various operating systems and devices:
Image: Universal operating system compatibility.
- Operating Systems: Driver-free for Windows (XP, Vista, 7, 10, 11), Mac OS, Linux, Unix, Debian, Ubuntu, Fedora, Raspbian, DOS, and other compatible systems.
- Video Resolution: Supports HDMI 2.0 with resolutions up to 3840x2160@60Hz (4K@60Hz) and is backward compatible with lower resolutions.
- USB Devices: Compatible with standard USB keyboards and mice. For wireless keyboard/mouse sets sharing one dongle, connect the dongle to a dedicated USB port.
7. Specifications
Key technical specifications for the CKL 2x2 KVM Switch:
- Model Number: 922HUA-1A
- Product Dimensions (L x W x H): 5.12 x 2.95 x 1.65 inches
- Weight: 2.34 Pounds
- Video Standard: HDMI 2.0
- Max Resolution: 3840x2160@60Hz (4K@60Hz)
- USB Standard: USB 2.0
- Connector Type: HDMI, USB 2.0
- Power Input: DC 5V
- Actuator Type: Push Button
- Number of Positions: 2 (for 2 computers)
- Manufacturer: CKL
Image: Maximum resolution supported by the KVM switch.
8. Troubleshooting
If you encounter issues with your KVM switch, please refer to the following common solutions:
- No Display/Blank Screen:
- Ensure all HDMI cables are securely connected to both the KVM switch and your computers/monitors.
- Verify that each computer has two active HDMI outputs connected to the KVM.
- Check if any necessary video adapters (e.g., DisplayPort to HDMI) are functioning correctly.
- Confirm the KVM switch is powered on and the correct computer is selected (indicated by the front panel LEDs).
- Try restarting the KVM switch by cycling its power.
- Keyboard/Mouse Not Responding:
- Ensure your keyboard and mouse are connected to the dedicated USB Mouse/Keyboard (Hotkey) ports on the front panel.
- If using a wireless keyboard/mouse, ensure the dongle is properly inserted and the devices are charged.
- Check if the Hot Key ON/OFF switch is in the correct position for your intended use.
- Some wireless devices may function better when connected to a standard USB 2.0 HUB port if hotkeys are not required.
- Ensure the USB A-male to B-male cables are securely connected between your computers and the KVM switch.
- Intermittent Connectivity:
- Loose cable connections are a common cause. Re-seat all HDMI and USB cables.
- Ensure the power adapter is securely connected and providing stable power.
- Factory Reset Procedure: If persistent issues occur, a factory reset may resolve them. To perform a factory reset:
- Unplug all cables from the KVM switch except for a keyboard.
- Perform the hotkey combination: Double press RIGHT CONTROL, then press ESC three times, then press ENTER.
- After the KVM beeps, unplug the power adapter and leave it disconnected overnight.
- Reconnect all cables the next day and power on the unit.
9. Maintenance
To ensure the longevity and optimal performance of your CKL KVM switch:
- Keep the device in a cool, dry environment, away from direct sunlight and heat sources.
- Avoid exposing the device to liquids or excessive dust.
- Clean the exterior with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Ensure proper ventilation around the unit to prevent overheating.
10. Warranty and Support
The CKL 2x2 KVM Switch typically comes with a 1-year limited warranty from the date of purchase. This warranty covers manufacturing defects but generally does not cover damage caused by misuse, accidents, or unauthorized modifications.
For technical support, warranty claims, or further assistance, please contact CKL Technology customer service. You may also refer to the official PDF user manual for more detailed information, which can often be found on the product's support page or via the link provided during purchase.
Official User Manual (PDF): Download Here
