Extension tube connector Ergotron 98-731-290 Aluminium White

The Ergotron 98-731-290 extension tube connector increases adjustment flexibility for compatible monitor and keyboard arms. Made from aluminium with a white finish, this accessory adds a second extension that lengthens an arm’s reach by 9 inches (23 cm) and provides an additional rotation point for improved positioning. The connector is lightweight yet durable and is intended for use with Ergotron LX Pro Desk Monitor Arm, Wall Monitor Arm or Keyboard Arm.

Advantages

The aluminium construction offers strength while keeping the connector light at 0.4 kg. The white finish matches common Ergotron mounts and helps maintain a uniform appearance. Adding this extension provides an extra rotation point and extends the arm reach by 23 cm, enabling finer ergonomic adjustments. The product is backed by a 10-year warranty for long-term reliability.

Suitable for

• Extending reach of desk monitor arms
• Increasing reach for wall-mounted monitor arms
• Adding extension to keyboard arms for improved typing position
• Workstations where additional rotation and reach are required

Key specifications

• Material: aluminium
• Finish: white
• Added reach: 9 in (23 cm)
• Additional rotation point: yes
• Maximum supported weight when installed: 10 kg
• Net weight: 0.4 kg
• Warranty: 10 years

How to use

Attach the extension tube connector between the existing arm segments of a compatible Ergotron LX Pro Desk Monitor Arm, Wall Monitor Arm or Keyboard Arm according to the mount’s assembly instructions. Ensure all fasteners are tightened to the manufacturer’s torque recommendations and verify the arm’s range of motion and balance after installation. Adjust the monitor or keyboard position using the new rotation point and extended reach to achieve the desired ergonomic setup.

Recommendations

Use this extension connector only with compatible Ergotron arms and observe the maximum supported weight of 10 kg for the extended configuration. After installation, check stability and periodically re-tighten fasteners if necessary to maintain safe operation.