TESmart 4 Port Dual Monitor DisplayPort KVM Switch (Model DKS402-E23) User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your TESmart 4 Port Dual Monitor DisplayPort KVM Switch, Model DKS402-E23. This device allows you to control up to four computers using a single set of keyboard, mouse, and two DisplayPort monitors. It supports resolutions up to 4K@60Hz and 2K@144Hz, and features DCCI for cascading, audio output, and USB 2.0 device sharing.

Please read this manual thoroughly before use to ensure proper setup and functionality.

Figure 1: TESmart 4 Port Dual Monitor DisplayPort KVM Switch (Model DKS402-E23)

2. Package Contents

Verify that all items are present in your package:

• 1x TESmart 4 Port Dual Monitor DisplayPort KVM Switch
• 1x IR Remote Control (AAA batteries not included)
• 1x DC 12V Power Adapter
• 1x User Manual
• 4x USB A/B Cables
• 8x DisplayPort Cables
• 1x AUX Cable
• 1x IR Extension Cable
• 1x 3 Pins Connector (for RS232)
• Rack-mount ears with screws

Figure 2: Included accessories and cables

3. Product Layout

3.1 Front Panel

• Set Button: Used for configuration.
• MIN/SEC Buttons: Adjust auto-scan interval.
• LED Display: Shows active input port.
• Input Selection Buttons (1-4): Manually switch between connected computers.
• Status LED: Indicates KVM status.
• IR Receiver: For remote control signals.
• USB 2.0 Ports: For connecting USB peripherals like flash drives, printers, webcams.
• Power Switch: On/Off toggle for the device.
• L/R Audio Output: 3.5mm jack for audio output.

3.2 Rear Panel

• DC 12V Input: Power adapter connection.
• Ext.IR: Port for IR extension cable.
• L/R Audio Input/Output: 3.5mm jacks for audio.
• RS232 Port: For serial control.
• DCCI Port: For cascading multiple KVM switches.
• DP Output Ports (Output A, Output B): Connect to your two DisplayPort monitors.
• PC Input Ports (PC 1-4): Each PC input includes:
  • 2x DisplayPort Inputs (Input A, Input B)
  • 1x USB-B Input (for keyboard/mouse and USB 2.0 devices)

Figure 3: Front and Rear Panel Layout with Port Descriptions

4. Setup Instructions

Follow these steps to connect your TESmart KVM switch:

1. Power Off All Devices: Ensure all computers and monitors are powered off before making connections.
2. Connect Monitors: Connect your two DisplayPort monitors to the KVM switch's "Output A" and "Output B" DisplayPort output ports using the provided DisplayPort cables.
3. Connect Computers: For each computer (up to 4):
   • Connect the computer's DisplayPort outputs to the corresponding "Input A" and "Input B" DisplayPort inputs on the KVM switch (e.g., PC1 Input A, PC1 Input B).
   • Connect the computer's USB port to the corresponding USB-B input on the KVM switch (e.g., PC1 USB). Use the provided USB A/B cables.
4. Connect Keyboard and Mouse: Connect your USB keyboard and mouse to the dedicated keyboard and mouse USB ports on the KVM switch's rear panel.
5. Connect USB Peripherals: Connect any additional USB 2.0 devices (e.g., webcam, USB drive, printer) to the USB 2.0 ports on the front or rear panel.
6. Connect Audio (Optional): If desired, connect speakers or headphones to the 3.5mm audio output jack on the KVM switch.
7. Power On: Connect the DC 12V power adapter to the KVM switch and then plug it into a power outlet. Turn on the KVM switch using the power switch.
8. Power On Computers and Monitors: Power on your monitors first, then your computers.

Figure 4: Typical setup for 4 computers sharing 2 monitors

4.1 Cascading (DCCI)

The DCCI port allows you to cascade multiple KVM switches to expand your setup, for example, to control 4 monitors from one PC. Refer to the cascading diagram for detailed connection instructions.

Figure 5: Cascading Diagram (DCCI) for expanded monitor configurations

5. Operating Instructions

The TESmart KVM switch offers multiple methods for switching between connected computers:

5.1 Switching Methods

• Front Panel Buttons: Press the corresponding numbered button (1-4) on the front panel to switch to the desired computer.
• Keyboard Hotkeys: Use specific keyboard combinations to switch inputs. Refer to the hotkey section in the full user manual for detailed commands.
• Mouse Gesture: Move the mouse cursor across the screen border to switch between computers. This feature can be enabled/disabled.
• IR Remote Control: Use the included IR remote control to select the desired input. Point the remote towards the KVM switch's IR receiver.
• Auto Scan: The KVM switch can automatically cycle through connected computers at adjustable intervals. Use the MIN/SEC buttons on the front panel to set the scan duration.
• RS232 Control: For advanced control, the KVM switch can be controlled via RS232 commands.

Figure 6: Multiple Switching Options

5.2 Display Modes

The KVM switch supports various display configurations for your dual monitors:

• Extended Display: One computer uses both monitors as an extended desktop.
• Mirror/Duplicate Display: One computer displays the same content on both monitors.
• Criss-crossing Display: Each monitor displays content from a different computer (e.g., Monitor 1 shows PC1, Monitor 2 shows PC2).

Figure 7: Supported Display Modes

5.3 USB 2.0 Device Sharing

The KVM switch allows sharing of USB 2.0 devices such as webcams, USB flash drives, and printers among all connected computers. Simply plug the device into one of the available USB 2.0 ports on the KVM switch.

Figure 8: Sharing USB 2.0 Devices

6. Maintenance

• Cleaning: Use a soft, dry cloth to clean the KVM switch. Do not use liquid or aerosol cleaners.
• Ventilation: Ensure the KVM switch has adequate ventilation to prevent overheating. Do not block ventilation openings.
• Power: Always use the provided DC 12V power adapter. Disconnect power during electrical storms or when unused for long periods.
• Cable Management: Keep cables organized and free from kinks or excessive bending to prevent damage.

7. Troubleshooting

• No Display/Flickering:
  • Ensure all DisplayPort cables are securely connected.
  • Verify that the correct input is selected on the KVM switch.
  • Check monitor input settings to ensure DisplayPort is selected.
  • Some DisplayPort products, including this model, do not feature EDID emulation. This may cause display issues or window rearrangement when switching inputs. Consider using an EDID emulator if this is a persistent problem.
  • Try restarting the KVM switch and then the computers/monitors.
• Keyboard/Mouse Not Responding:
  • Ensure the USB A/B cables are securely connected between computers and the KVM switch.
  • Verify the keyboard and mouse are connected to the dedicated K&M USB ports on the KVM switch.
  • Try connecting the keyboard/mouse to the USB 2.0 ports if the dedicated ports are not working.
  • Restart the KVM switch.
  • Wireless Bluetooth keyboards and mice are not supported. Use wired or 2.4GHz wireless (with USB dongle) devices.
• Audio Issues:
  • Check all audio cable connections.
  • Ensure audio output is selected correctly on your computer.
• Switching Delays:
  • A brief delay during switching is normal as the system re-establishes connections.
  • Ensure high-quality DisplayPort and USB cables are used.

8. Specifications

Figure 9: High-resolution support up to 4K@60Hz

9. Warranty and Support

TESmart provides a one-year warranty for this product. For any technical assistance or questions, please contact TESmart customer support. Lifetime technical support is available to ensure your satisfaction.

For support, please visit the official TESmart website or refer to the contact information provided in your product packaging.