Overview
The Ergotron HX Desk Dual Monitor Arm, part number 45-476-216, is a white desk-mounted monitor support designed to hold and position two displays. Its articulated arm and dual-hinge support allow users to adjust screen placement independently, helping organize multi-monitor workstations for professional, technical, and office environments.
Monitor Positioning and Adjustment
The HX dual-monitor assembly combines an articulated arm with a hinged monitor bow and two independent monitor pivots. Constant Force technology supports smooth adjustment, while the integrated handle helps users reposition the displays. The arm can extend, retract, and fold to accommodate different workstation layouts.
Height adjustment provides up to 29.2 cm of lift. The arm offers 360-degree panning, while the base rotation is limited to 180 degrees. The monitor pivots support quick-release functionality and independent screen adjustment.
Display Compatibility
This configuration is designed for two monitors with screen sizes up to 32 inches, subject to the mount's weight limits. Each monitor must weigh between 2.3 and 8 kg to meet the specified load range.
The mount uses the VESA MIS-D mounting interface. Check each display's mounting-hole pattern, weight, and physical dimensions before installation to confirm compatibility with the monitor pivots and available workspace.
Installation and Included Components
The manufacturer lists the following components for this model:
- HX monitor arm and extension
- Dual-monitor hinged bow
- Two monitor pivots
- Positioning handle
- Two-piece desk clamp
- Grommet mounting hardware
- Monitor mounting hardware
The desk clamp attaches to the edge of a suitable work surface, while the grommet mounting option supports installation through an appropriate desk opening. Confirm that the desk construction and available mounting space are suitable before installation.
Key Features
- Dual-display support: Positions two monitors on one articulated desk-mounted arm.
- Constant Force technology: Supports smooth monitor adjustment.
- Independent monitor positioning: Two monitor pivots allow individual display adjustment.
- Flexible movement: Provides height adjustment, arm extension, panning, and folding.
- Multiple desk-mounting options: Includes desk-clamp and grommet mounting hardware.
Applications
The dual-monitor configuration can be used in office workstations, software development environments, technical support desks, monitoring stations, and other work areas where two displays are used simultaneously. Its articulated design allows screen positions to be adjusted to suit different tasks and desk layouts.
DC Supplies Product Note
Before ordering, verify the weight of each monitor independently. Both displays must fall within the specified 2.3–8 kg range, and the mounting interface must match the supplied monitor pivots. Also check desk thickness, mounting-edge access, and grommet-hole availability to determine which installation method is suitable.
Specifications
| Brand | Ergotron |
|---|---|
| Part Number / MPN | 45-476-216 |
| Product Type | Dual-monitor desk mount arm |
| Product Series | HX |
| Model | HX Desk Dual Monitor Arm |
| Color | White |
| Supported Displays | 2 monitors |
| Typical Maximum Screen Size | 32 inches per monitor |
| Weight Capacity | 2.3–8 kg per monitor |
| Height Adjustment | 29.2 cm lift |
| Tilt | Up to 70 degrees / down 5 degrees |
| Panning | 360 degrees |
| Base Rotation | 180 degrees |
| Arm Extension | Up to 60 cm |
| Mounting Standard | VESA MIS-D |
| Adjustment Technology | Constant Force |
| Desk Mounting Options | Two-piece desk clamp and grommet mount |
| Monitor Pivots | 2 independent pivots with quick-release functionality |
| Warranty | 10 years |
Frequently Asked Questions
Can this arm support two monitors?
Yes. The HX Desk Dual Monitor Arm is designed for two displays, with a specified weight capacity of 2.3–8 kg per monitor.
Will it fit any 32-inch monitor?
Not necessarily. Screen size alone does not establish compatibility. Each display must meet the weight requirements and have a compatible VESA MIS-D mounting interface.
Can the two monitors be adjusted independently?
Yes. The assembly includes two monitor pivots, allowing each display to be positioned independently.
How can the arm be attached to a desk?
The listed package includes a two-piece desk clamp and grommet mounting hardware. The appropriate option depends on the desk's construction and mounting provisions.
What is the warranty period?
Ergotron specifies a 10-year warranty for this model. Consult the applicable regional warranty terms for coverage details.










