1. Introduction
Thank you for choosing the deleyCON Dual Monitor Adapter. This adapter allows you to install two monitors on a single existing monitor desk mount, effectively converting it into a dual monitor setup. This manual provides detailed instructions for safe installation, operation, and maintenance of your new adapter. Please read this manual thoroughly before installation and keep it for future reference.
2. Safety Information
- Weight Capacity: Do not exceed the maximum load capacity of 2x 10 kg (22 lbs). Overloading can cause instability and potential damage or injury.
- VESA Compatibility: Ensure your monitors are compatible with VESA 75x75mm or 100x100mm mounting patterns.
- Monitor Size: This adapter is designed for monitors between 13 and 27 inches (33-69cm).
- Existing Mount Compatibility: This product is an adapter for existing monitor desk mounts. Ensure your existing mount can support the combined weight of the adapter and two monitors.
- Installation: Follow all installation steps carefully. If you are unsure about any part of the installation, seek professional assistance.
- Secure Fasteners: Periodically check all screws and fasteners to ensure they are tight and secure.
3. Package Contents
Please verify that all components are present before beginning installation. If any parts are missing or damaged, please contact deleyCON customer support.

Image: Overview of all included components for the deleyCON Dual Monitor Adapter, including the main adapter bar, two VESA mounting plates, various screws for monitor attachment, and necessary installation tools.
- Dual Monitor Adapter Bar
- 2x VESA Mounting Plates (75x75mm & 100x100mm compatible)
- Mounting Hardware (various screws, washers, spacers)
- Allen Keys for assembly and adjustment
- Illustrated Installation Instructions (physical manual)
4. Specifications
| Model | MK-W-99 |
| Material | Alloy Steel |
| VESA Compatibility | 75x75mm, 100x100mm (output to 2x 75x75mm & 100x100mm) |
| Monitor Size Compatibility | 13" - 27" (33-69cm) |
| Load Capacity | Max. 2x 10 kg (22 lbs) |
| Tilt Angle | -45° / +45° |
| Swivel Angle | -15° / +15° |
| Mounting Type | Attaches to existing desk monitor arm |
5. Setup and Installation
This adapter is designed to be mounted onto an existing single monitor desk arm. Ensure your existing arm is robust enough to support the combined weight of the adapter and two monitors.

Image: Important compatibility information, including supported VESA patterns (75x75mm and 100x100mm) and the maximum monitor size (13-27 inches) and weight (2x 10kg).
- Prepare the Adapter: Assemble the dual monitor adapter bar by attaching the two VESA mounting plates to the ends of the bar using the provided screws. Ensure all connections are secure.
- Attach to Existing Monitor Arm: Mount the central bracket of the deleyCON Dual Monitor Adapter onto your existing single monitor desk arm. Use the hardware provided with your existing arm or the adapter, as appropriate, to ensure a firm and stable connection.
- Attach Monitors: Carefully attach your monitors to the VESA mounting plates on the adapter. Align the VESA holes on the back of your monitors with the holes on the adapter plates. Use the appropriate screws (M4 or M6, depending on your monitor) from the included hardware kit. Do not overtighten.
- Cable Management: Utilize the integrated cable clips or management features on the adapter to route your monitor cables neatly along the arm, reducing clutter.

Image: The deleyCON Dual Monitor Adapter fully assembled, showcasing its design and readiness for mounting two monitors.
6. Operating and Adjustments
Once your monitors are securely mounted, you can adjust their position for optimal viewing comfort.
- Tilt Adjustment: The VESA plates allow for a tilt range of -45° to +45°. Loosen the tilt adjustment screw on each VESA plate, position the monitor to your desired angle, and then tighten the screw to secure it.
- Swivel Adjustment: The adapter allows for a swivel range of -15° to +15° for each monitor. Adjust the monitors horizontally as needed and tighten the swivel mechanism.
- Horizontal Positioning: The monitors can be slid along the main adapter bar to adjust the gap between them or to align them perfectly. Loosen the screws holding the VESA plates to the bar, slide the monitors, and then re-tighten.
7. Maintenance
Regular maintenance will ensure the longevity and safe operation of your deleyCON Dual Monitor Adapter.
- Cleaning: Clean the adapter with a soft, dry cloth. Do not use abrasive cleaners or solvents, as they may damage the finish.
- Check Fasteners: Periodically (e.g., every 3-6 months) check all screws and bolts to ensure they remain tight. Over time, vibrations or adjustments can cause fasteners to loosen.
- Lubrication: No lubrication is typically required for this product. If any joints become stiff, contact customer support for advice.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Monitors are unstable or sag | Overload; Loose fasteners; Existing arm too weak | Ensure total weight (adapter + 2 monitors) does not exceed 20kg. Tighten all screws. Verify your existing monitor arm's weight capacity. |
| Difficulty adjusting tilt/swivel | Screws too tight; Mechanism stiff | Slightly loosen the adjustment screws. If still stiff, ensure no cables are obstructing movement. |
| Monitors not level | Uneven installation; Uneven monitor weight | Adjust the height of each VESA plate slightly if possible, or re-level the main adapter bar on your existing arm. |
9. Warranty and Support
deleyCON products are designed for durability and performance. For warranty information or technical support, please visit the official deleyCON website or contact their customer service directly. Please have your model number (MK-W-99) and purchase details ready when contacting support.
Contact Information:
- Website: www.deleycon.com
- Email: info@deleycon.com





