1. Introduction
This manual provides instructions for the installation, operation, and maintenance of the Maclean MC-811 3-Way Monitor Holder. This gas spring-assisted monitor arm is designed to securely hold three monitors, offering flexible positioning and an integrated USB 3.0 hub for enhanced desktop connectivity. Please read this manual thoroughly before installation and use to ensure proper setup and safe operation.
Image 1.1: Overview of the Maclean MC-811 3-Way Monitor Holder.
2. Safety Information
- Ensure all components are present and undamaged before assembly. Do not use if any parts are missing or defective.
- This product is intended for indoor use only.
- Do not exceed the maximum weight capacity of 7 kg (15.4 lbs) per monitor arm.
- Ensure the mounting surface (desk) is stable and strong enough to support the combined weight of the monitor arm and all attached monitors.
- Keep children and pets away during installation. Small parts may be a choking hazard.
- Tighten all screws firmly, but do not overtighten to avoid stripping threads or damaging components.
- Periodically check all connections and fasteners to ensure they remain secure.
3. Package Contents
Verify that all items listed below are included in your package:
- Main Pole
- Desk Clamp Assembly
- Gas Spring Monitor Arms (2 units for outer monitors)
- Central Monitor Arm (1 unit for middle monitor)
- VESA Plates (3 units)
- USB 3.0 Hub (integrated into clamp base)
- Hardware Kit (screws, washers, Allen keys)
- Instruction Manual (this document)
Image 3.1: All components of the Maclean MC-811 monitor holder.
4. Setup and Installation
Follow these steps carefully to install your monitor holder.
4.1. Attach Desk Clamp to Table
- Place the desk clamp assembly on the edge of your desk.
- Tighten the clamp screw until the assembly is securely fastened to the desk. Ensure it is stable and does not wobble. The clamp supports desk thicknesses from 10mm to 50mm.
4.2. Assemble Main Pole and Arms
- Insert the main pole into the desk clamp base and secure it with the provided screw.
- Slide the central monitor arm bracket onto the main pole and tighten it at the desired height.
- Attach the two gas spring monitor arms to the main pole, one on each side of the central arm. Ensure they are at a suitable height for your setup.
Image 4.1: Assembly diagram showing pole and arm attachment points and dimensions.
4.3. Attach VESA Plates to Monitors
- Carefully lay your monitors face down on a soft, clean surface.
- Attach a VESA plate to the back of each monitor using the appropriate screws from the hardware kit. Ensure the VESA plate aligns with your monitor's VESA mounting holes (75x75mm or 100x100mm).
- Tighten the screws securely.
4.4. Mount Monitors to Arms
- Carefully lift each monitor and slide its VESA plate onto the corresponding monitor arm bracket.
- Secure the monitor to the arm using the locking mechanism on the VESA bracket.
- Repeat for all three monitors.
5. Operating Instructions
5.1. Gas Spring Adjustment
The two outer monitor arms feature gas springs for easy height adjustment. After mounting your monitors, you may need to adjust the gas spring tension to match the weight of your monitors. Use the provided Allen key to turn the adjustment screw on the arm:
- Turn clockwise (towards '-') to decrease tension for lighter monitors.
- Turn counter-clockwise (towards '+') to increase tension for heavier monitors.
Adjust until the monitor stays at the desired height when moved, without drifting up or down.
5.2. Monitor Positioning
The monitor arms offer full motion capabilities:
- Tilt: Adjust the monitor screen up or down to reduce glare and optimize viewing angles.
- Swivel: Rotate the monitor horizontally to share your screen or change viewing direction.
- Rotate: Pivot the monitor from landscape to portrait orientation.
The central monitor arm allows for height adjustment along the main pole, as well as tilt, swivel, and rotation.
Image 5.1: The monitor holder supporting three monitors, demonstrating flexible positioning.
5.3. USB 3.0 Hub Usage
The desk clamp base includes two integrated USB 3.0 ports. Connect the provided USB cable from the monitor holder to an available USB 3.0 port on your computer to enable these ports for high-speed data transfer and charging.
Image 5.2: Detail of the integrated 2x USB 3.0 ports on the clamp base.
6. Maintenance
- Clean the monitor holder with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Periodically check all screws and connections to ensure they are tight and secure. Retighten if necessary.
- Do not attempt to disassemble the gas spring mechanism, as it contains high-pressure components.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Monitor sags or rises unexpectedly. | Gas spring tension is incorrect for monitor weight. | Adjust the gas spring tension using the provided Allen key (refer to Section 5.1). |
| Monitor is not stable or wobbles. | Desk clamp or VESA plate screws are loose. | Ensure the desk clamp is securely tightened to the desk. Check and tighten all VESA plate screws and arm connections. |
| USB ports are not functioning. | USB cable not connected or faulty. | Ensure the USB cable from the monitor holder is securely connected to a functioning USB 3.0 port on your computer. Try a different USB port on your computer. |
| Monitors are not level. | Minor height discrepancies or uneven desk surface. | Fine-tune the height adjustment of individual monitor arms. Some VESA plates allow for minor leveling adjustments. |
8. Specifications
- Model: MC-811
- Monitor Compatibility: 17-27 inches (per monitor)
- VESA Compatibility: 75x75mm, 100x100mm
- Weight Capacity: Up to 7 kg (15.4 lbs) per arm
- Movement: Full Motion (Tilt, Swivel, Rotate)
- Mounting Type: Table Clamp
- Desk Thickness Compatibility: 10mm - 50mm
- Material: Aluminum
- Integrated Ports: 2x USB 3.0
- Product Dimensions: 21.65 x 15.55 x 4.53 inches (approximate, folded)
- Item Weight: 19.14 pounds
9. Warranty and Support
Maclean products are manufactured to high-quality standards. For warranty information or technical support, please refer to the warranty card included with your purchase or visit the official Maclean website. Please have your product model number (MC-811) and purchase details available when contacting support.
