AOC AM420B Black Dual Monitor Arm | Mechanical Spring | 17–34" Each | 2–9kg Per Arm | VESA 75x75 / 100x100 | C-Clamp & Grommet
Description
The AOC AM420B is a black dual-monitor desk arm designed for two monitors from 17" to 34" each, with a supported weight range of 2–9 kg per arm. It uses a mechanical spring adjustment system, supports VESA 75 × 75 mm and 100 × 100 mm, and includes integrated cable management plus both C-clamp and grommet mounting options.
| Specification | Details |
|---|---|
| Brand | AOC |
| Model | AM420B |
| Product Type | Dual Monitor Arm |
| Color | Black |
| Material | Aluminum Alloy |
| Adjustment System | Mechanical Spring |
| Supported Monitor Size | 17"–34" each |
| Weight Capacity | 2–9 kg per monitor arm |
| VESA Compatibility | 75 × 75 mm / 100 × 100 mm |
| Maximum Height | 495 mm |
| Height Adjustment Range | 250 mm |
| Maximum Extension | 455 mm |
| Tilt Range | -15° to +90° |
| Swivel Range | -90° to +90° |
| Pivot / Rotation | 360° |
| Cable Management | Built-in |
| Desk Mount | C-Clamp / Grommet |
| Net Weight | Approx. 5 kg |
| Gross Weight | Approx. 5.8 kg |
| Package Dimensions | 405 × 195 × 115 mm |
Dual Monitor Support
The AM420B supports two monitors, each measuring from 17" to 34", with 2–9 kg capacity per arm. This makes it suitable for dual productivity, gaming, trading, or multitasking setups.
Mechanical Spring System
Each arm uses a mechanical spring tensioning system designed to match the weight of the monitor and provide smooth, stable adjustment. AOC states the spring mechanism has undergone more than 30,000 movement tests.
Ergonomic Movement
Each arm supports:
- 250 mm height adjustment
- Up to 495 mm maximum height
- Approx. 455 mm extension
- -15° to +90° tilt
- ±90° swivel
- 360° pivot / rotation
This allows landscape or portrait orientation and independent positioning of each display.
VESA Compatibility
Supports:
- VESA 75 × 75 mm
- VESA 100 × 100 mm
These are the common mounting patterns used by most compatible monitors.
Mounting Options
The AM420B supports both:
- C-Clamp mounting
- Grommet mounting
AOC’s Singapore store lists C-clamp compatibility with desk surfaces from roughly 15 mm to 80 mm thick, while grommet mounting supports surfaces up to about 50 mm thick depending on installation.
Cable Management
Integrated cable channels with removable covers let you route power and display cables through the arms, helping keep the desk cleaner even when the monitors are repositioned or rotated.
Construction
- Black finish
- Aluminum-alloy construction
- Two independently adjustable monitor arms
- Mechanical spring mechanism
- Integrated cable routing
- VESA plates
- C-clamp and grommet installation
Package Contents
AOC lists:
- AOC AM420B Dual Monitor Arm
- C-Clamp Mount
- Grommet Mount
- Installation Materials / Hardware
- User Manual
Main Product Highlights
- Dual Monitor Arm
- 17"–34" Support Per Monitor
- 2–9 kg Capacity Per Arm
- Mechanical Spring System
- 250 mm Height Adjustment
- 495 mm Maximum Height
- 455 mm Extension
- -15° to +90° Tilt
- ±90° Swivel
- 360° Rotation
- VESA 75×75 / 100×100 mm
- Built-In Cable Management
- C-Clamp & Grommet Mounting
- Aluminum Alloy Construction
- Black Finish
