1. Introduction and Overview
This manual provides detailed instructions for the installation, operation, and maintenance of your AVLT Single 17"-49" Super Ultrawide Monitor Arm. This premium aluminum desk stand is designed to support monitors up to 50 lbs (23 kg), offering adjustable pneumatic height, full motion swivel, tilt, and rotation capabilities. It also features integrated USB 3.0 and AUX ports for enhanced connectivity, helping to optimize your workspace and improve ergonomic posture.
The monitor arm is compatible with VESA 75x75mm or 100x100mm mounting patterns and can be installed using either a C-clamp or grommet mounting option, accommodating desk thicknesses up to 3.3 inches (85mm).
2. Safety Information
- Weight Capacity: Do not exceed the maximum weight capacity of 50 lbs (23 kg). Overloading can cause instability and potential damage to the arm or monitor.
- VESA Compatibility: Ensure your monitor has VESA 75x75mm or 100x100mm mounting holes.
- Desk Stability: Verify that your desk surface is strong enough to support the combined weight of the monitor arm and your monitor.
- Proper Installation: Follow all installation steps carefully. Improper installation can lead to equipment damage or personal injury.
- Pinch Points: Be aware of potential pinch points during adjustment. Keep hands and fingers clear of moving parts.
- Cable Management: Route cables securely to prevent snagging or damage.
3. Package Contents
Please verify that all components are present before beginning installation:
- Monitor Arm Assembly
- Desk Clamp (C-clamp)
- Grommet Mount Base
- VESA Plate
- Hardware Kit (screws, washers, spacers)
- Allen Wrenches (various sizes)
- USB 3.0 and AUX Extension Cables
- Instruction Manual (this document)
4. Setup and Installation
Before installation, ensure your desk meets the thickness requirements for your chosen mounting method:
- C-Clamp: Compatible with desk thickness from 0.4" to 3.3" (10mm to 85mm).
- Grommet Mount: Compatible with desk thickness from 0.4" to 3.3" (10mm to 85mm) and grommet hole diameter from 0.4" to 2.3" (10mm to 60mm).
4.1. Choose Your Mounting Option
The AVLT monitor arm offers two installation methods: C-clamp or grommet mount. Select the method best suited for your desk.

C-Clamp Installation: The C-clamp securely attaches the arm to the edge of your desk. This method is ideal for desks without existing grommet holes or for temporary setups.

Grommet Mount Installation: The grommet mount utilizes an existing hole in your desk for a more integrated and stable setup. This is often preferred for a cleaner look.
4.2. Attach VESA Plate to Monitor
- Carefully place your monitor face down on a soft, clean surface to prevent scratches.
- Locate the VESA mounting holes on the back of your monitor.
- Align the VESA plate (included in the package) with the mounting holes.
- Secure the VESA plate to the monitor using the appropriate screws from the hardware kit. Ensure they are tightened firmly but do not overtighten.

The VESA plate attaches to the back of your monitor using the provided screws.

Ensure all screws are securely fastened for a stable connection.
4.3. Mount the Arm to Your Desk
Follow the specific instructions for your chosen mounting method:
C-Clamp Installation Steps:
- Assemble the C-clamp base to the main pole of the monitor arm.
- Position the C-clamp on the edge of your desk.
- Tighten the C-clamp screw until the arm is securely fastened to the desk. Ensure it is stable and does not wobble.
Grommet Mount Installation Steps:
- Assemble the grommet base to the main pole of the monitor arm.
- Insert the grommet bolt through the hole in your desk.
- Secure the base from underneath the desk using the provided washer and nut. Tighten until the arm is stable.
4.4. Attach Monitor to Arm
- With the VESA plate already attached to your monitor, carefully lift the monitor.
- Slide the VESA plate on the monitor onto the mounting head of the arm until it clicks into place.
- Secure the monitor to the arm using the safety screw (if applicable) to prevent accidental detachment.
4.5. Adjust Gas Spring Tension
The gas spring tension needs to be adjusted to match the weight of your monitor. This ensures the arm holds its position and allows for smooth height adjustments.
- Use the provided Allen wrench to adjust the tension screw located on the arm joint.
- Turn clockwise to increase tension for heavier monitors.
- Turn counter-clockwise to decrease tension for lighter monitors.
- Adjust until the monitor stays at the desired height when released, without drifting up or down.

Adjust the gas spring tension with the Allen wrench to support your monitor's weight.
5. Operating Instructions
Your AVLT monitor arm offers a range of adjustments to achieve optimal viewing comfort and productivity.
5.1. Adjusting Monitor Position

The arm allows for extensive movement to customize your viewing angle.
- Height Adjustment: The pneumatic gas spring allows for smooth vertical movement from 10" to 23" (255mm to 585mm). Gently push or pull the monitor to the desired height.
- Tilt: Tilt your monitor +45° to -30° to reduce glare and find the perfect viewing angle.
- Swivel: Swivel the monitor +90° to -90° horizontally to share your screen or adjust your perspective.
- Rotation: Rotate your monitor +180° to -180° to switch between landscape and portrait orientations.
- Arm Extension: Extend or retract the arm to bring the monitor closer or push it further away, optimizing your viewing distance.
5.2. Using Integrated USB and AUX Ports
The monitor arm base includes two USB 3.0 ports and two AUX ports (microphone and headset) for convenient access to peripherals.

Connect your devices directly to the arm's base for easy access.
- Connect the included USB 3.0 and AUX extension cables from the arm's base to the corresponding ports on your computer.
- Once connected, you can plug USB devices (e.g., flash drives, keyboards, mice) into the USB ports and headphones/microphones into the AUX ports on the arm's base.
5.3. Cable Management
The monitor arm features integrated cable management channels to keep your workspace tidy and organized.

Route your cables through the arm for a clean and clutter-free desk.
- Open the cable covers located on the underside of the arm.
- Route your monitor's power and display cables, as well as the USB and AUX extension cables, through these channels.
- Close the cable covers to conceal the cables.
6. Maintenance
- Cleaning: Wipe the monitor arm with a soft, damp cloth. Avoid using abrasive cleaners or solvents that could damage the finish.
- Periodic Checks: Periodically check all screws and connections to ensure they remain tight and secure. Re-tighten if necessary.
- Gas Spring: The gas spring is designed for long-term use and generally requires no maintenance. If the arm's movement becomes stiff or loose over time, re-adjust the tension as described in Section 4.5.
7. Troubleshooting
7.1. Monitor Sags or Does Not Stay at Desired Height
- Solution: The gas spring tension is likely too low for your monitor's weight. Refer to Section 4.5 and increase the gas spring tension by turning the adjustment screw clockwise.
- Check Weight: Ensure your monitor's weight does not exceed the arm's maximum capacity of 50 lbs (23 kg).
7.2. Arm is Difficult to Move or Adjust
- Solution: The gas spring tension may be too high, or the joint screws are too tight. Refer to Section 4.5 and decrease the gas spring tension by turning the adjustment screw counter-clockwise. Also, check the tightness of the main arm joint screws and loosen them slightly if they are excessively tight.
7.3. USB/AUX Ports Not Functioning
- Solution: Ensure the USB 3.0 and AUX extension cables from the arm's base are securely connected to the corresponding ports on your computer. Try connecting the cables to different ports on your computer to rule out port issues.
7.4. Monitor Wobbles or is Unstable
- Solution: Check that the desk clamp or grommet mount is securely tightened to the desk. Ensure the VESA plate is firmly attached to both the monitor and the arm. Verify that all screws are tightened.
8. Specifications
Feature | Specification |
---|---|
Model Number | AVLT-DM40-1 |
Compatible Screen Size | 17" to 49" (Single Screen) |
Weight Capacity | Up to 50 lbs (23 kg) |
VESA Compatibility | 75x75mm, 100x100mm |
Height Adjustment Range | 10" to 23" (255mm to 585mm) |
Tilt Range | +45° to -30° |
Swivel Range | +90° to -90° |
Rotation | 360° (Landscape to Portrait) |
Desk Thickness (C-Clamp) | 0.4" to 3.3" (10mm to 85mm) |
Desk Thickness (Grommet) | 0.4" to 3.3" (10mm to 85mm) |
Grommet Hole Diameter | 0.4" to 2.3" (10mm to 60mm) |
Integrated Ports | 2 x USB 3.0, 2 x AUX (Microphone, Headset) |
Material | Aluminum, Steel |
Product Dimensions | 29.53 x 22.64 x 4.72 inches |
Item Weight | 25.3 pounds |

Detailed dimensions and compatibility specifications for the AVLT monitor arm.
9. Warranty and Support
The AVLT Single 17"-49" Super Ultrawide Monitor Arm (Model: AVLT-DM40-1) is covered by a 3-YEAR MANUFACTURER WARRANTY.
AVLT also provides LIFETIME TECH SUPPORT for this product. If you encounter any issues, have questions regarding installation, operation, or troubleshooting, please contact AVLT customer support. For the most up-to-date contact information, please refer to the official AVLT website or your purchase documentation.