AV Access 4KSW21-DM Dual Monitor KVM Switch

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85%
94%
Video Quality
91%
Switching Responsiveness
88%
USB Hub Functionality
85%
Build Quality
90%
Compatibility
82%
Ease of Setup
78%
Hotkey Operation
87%
Desk Space Efficiency
74%
Cable Management
89%
Multi-Device Productivity
80%
Durability Over Time
86%
Peripheral Compatibility
92%
Display Detection Reliability
77%
User Manual Clarity
More

Overview

The AV Access 4KSW21-DM Dual Monitor KVM Switch provides a practical solution for managing two computers using a single set of peripherals. Designed with a compact and durable chassis, this KVM switch fits neatly on any desktop setup while offering reliable performance. Users can operate in extended or mirrored display modes, making it adaptable to various multitasking scenarios. Compatibility spans Windows, macOS, and Linux, ensuring broad usability. With intuitive connectivity and straightforward controls, the dual monitor switch reduces clutter and simplifies switching between systems, providing a seamless experience for users who need to manage multiple PCs efficiently and maintain a tidy, organized workspace without sacrificing functionality or display quality.

Features & Benefits

This KVM switch supports 4K@60Hz and other high refresh rates, delivering crisp visuals across both monitors. Switching between connected computers is effortless, with options to use either a front panel button or a keyboard hotkey. An integrated USB 3.0 hub allows multiple peripherals such as webcams, drives, or printers to be shared easily. Built-in EDID emulation ensures each PC correctly detects the monitors, reducing display errors. Dual application modes let users display independent content on each screen simultaneously, enhancing productivity. Overall, this AV Access model combines versatile connectivity with smooth operation, making complex multi-computer setups manageable and reducing the need for additional devices or constant reconnections.

Best For

The dual monitor switch is ideal for office professionals who need to manage two computers without switching keyboards and mice constantly. Gamers can also benefit from its dual monitor support across multiple systems, improving gameplay and streaming setups. Remote workers or educators handling multi-device workflows will find its flexible display modes valuable. Additionally, anyone using several USB peripherals simultaneously, such as printers, storage drives, or webcams, can centralize their access with this KVM switch. Its compatibility and practical design make it suitable for both home and professional environments, supporting varied user scenarios without adding unnecessary complexity or taking up excessive desk space, keeping operations smooth and organized.

User Feedback

Users generally praise this AV Access model for seamless switching between two computers, reporting minimal delay and reliable detection of monitors. High-quality video output is highlighted, especially for dual 4K displays, with few instances of lag or flicker. Some reviewers note a minor learning curve when using hotkey functions, but most adjust quickly. The USB hub functionality receives positive attention for fast data transfer and convenient peripheral management. A few users mention that setup may require careful cable organization to avoid clutter. Overall, feedback reflects satisfaction with performance and reliability, balanced with minor usability considerations that do not detract from the overall usefulness of this dual monitor switch.

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Pros

  • Allows seamless control of two computers using a single set of peripherals.
  • Supports both extended and mirrored display modes for flexible setups.
  • Provides reliable 4K@60Hz video output for smooth visuals.
  • Includes a USB 3.0 hub for connecting multiple peripherals efficiently.
  • EDID emulation ensures consistent detection of connected monitors.
  • Hotkey and front panel switching offer convenient access between PCs.
  • Compact design fits well on most desktop setups without clutter.
  • Compatible with Windows, macOS, and Linux for cross-platform use.
  • Dual application modes let users operate two monitors independently.

Cons

  • Some users experienced a minor learning curve with hotkey operation.
  • Not ideal for setups requiring extreme portability due to cabling needs.
  • Occasional issues reported with older or uncommon monitors needing adjustment.
  • Initial configuration may be confusing for beginners unfamiliar with KVM switches.
  • Limited to controlling only two computers, which may restrict larger setups.
  • Some buyers noted that the device can feel slightly heavy for its size.
  • High-end USB peripherals may not always be recognized immediately by this KVM switch.

Ratings

After analyzing verified user reviews worldwide, in multiple languages and across various platforms, RR-AI has aggregated insights on the AV Access 4KSW21-DM Dual Monitor KVM Switch. Spam, incentivized, duplicate, off-topic, and exaggerated feedback was removed to ensure only authentic, high-quality opinions shaped the results. The scores reflect both the strengths and occasional limitations noted by users, offering a balanced view of this device's performance, reliability, and usability in real-world setups.

Video Quality
94%
Many buyers note that the device delivers clear and sharp visuals across both monitors, making extended workflows and gaming sessions more enjoyable. The color reproduction and smooth refresh rates are frequently praised, especially when handling high-resolution content or detailed spreadsheets. Users also appreciate the consistent output without flickering or lag.
Some users mentioned occasional issues with certain monitor models not displaying the full 4K resolution immediately. A few buyers experienced minor calibration adjustments needed for optimal color balance. These situations, while rare, can cause initial setup delays for those unfamiliar with multi-display configurations.
Switching Responsiveness
91%
Users highlight that switching between two computers is fast and reliable, whether using the front panel button or the keyboard hotkey. The transition feels seamless in most setups, reducing interruptions during multitasking. Several reviewers emphasize that this responsiveness enhances productivity in busy work environments.
Not everyone agreed on the speed of switching; some users noted a slight delay when waking a computer from sleep mode. A handful reported occasional missed keystroke recognition during rapid switching, which required repeating the command.
USB Hub Functionality
88%
Many buyers value the ability to share multiple USB peripherals without constantly unplugging devices. The USB 3.0 ports provide fast transfer rates for external drives and smooth operation for keyboards, mice, and webcams. This centralization of devices is seen as a major convenience for home and office setups.
Some users reported that certain high-powered peripherals occasionally failed to initialize immediately. A few noted that using multiple USB devices at once could slightly impact responsiveness, requiring careful management of connected devices.
Build Quality
85%
Users generally find the unit solid and well-constructed, with a compact design that fits neatly on desks. The casing feels durable, and the buttons and ports give a reassuring tactile response. Many appreciate that it does not feel cheap despite its relatively small size.
A small number of buyers noted minor flex in the casing when pressing the buttons. Some felt the device could be slightly heavier for added stability, especially when cables are fully connected on a crowded desktop.
Compatibility
90%
Most users report that the device works well with Windows, macOS, and Linux systems without extra drivers. It easily integrates into existing setups with dual monitors and varied peripheral configurations. Users also mention smooth recognition of connected hardware across different OS versions.
A few users faced minor issues with specific Linux distributions, requiring additional configuration for full USB hub functionality. Some older monitor models required manual resolution adjustment before displaying correctly.
Ease of Setup
82%
18%
Many buyers found initial setup straightforward, with intuitive connections and clear labeling for USB and HDMI ports. Plug-and-play functionality is often highlighted as convenient, especially for those not deeply technical. Quick start guides help users get started in minutes.
Some reviewers indicated that cable routing can be tricky in tight spaces, and inexperienced users may need extra time to connect everything neatly. A few noted that configuring dual application modes required consulting the manual.
Hotkey Operation
78%
22%
Users appreciate having the hotkey option for rapid switching, especially during intense multitasking. Once learned, the sequence allows quick transitions between computers without touching the front panel. This feature is considered handy for professional workflows.
Some buyers reported a learning curve when memorizing hotkey sequences. A few experienced occasional missed hotkey triggers, particularly when multiple applications were active, which required pressing the combination again.
Desk Space Efficiency
87%
Many users value the compact footprint of the device, which minimizes clutter while supporting dual monitors. Its low-profile design fits comfortably on most desks, making it suitable for small office spaces. Users also appreciate how it centralizes connections.
A handful of reviewers mentioned that cable management can still be challenging with several peripherals connected. In some setups, the device requires additional cable organizers to keep the desk tidy.
Cable Management
74%
26%
Some users found that the device allows relatively neat cable organization due to clearly labeled ports and spacing. It can help reduce tangling and keeps frequently used connections accessible. The included cables are generally sufficient for most setups.
Several buyers noted that with multiple HDMI and USB connections, cords can become crowded and harder to arrange. The compact design, while convenient, can limit how cables lay flat and requires extra effort to maintain order.
Multi-Device Productivity
89%
Users highlight the benefit of managing two computers from one workstation, improving efficiency in multitasking scenarios. Extended and mirrored modes allow for flexible workflows, which is particularly useful for coding, trading, or content creation. Many find the dual application mode especially valuable.
Some reviewers wished for more customization options for each display mode. A few users noted occasional software conflicts when switching between PCs with different peripheral setups.
Durability Over Time
80%
20%
Many buyers are satisfied with the device’s long-term performance, noting that it maintains stable operation over months of daily use. The build quality supports frequent switching without visible wear. Users also report that buttons and ports remain responsive after prolonged usage.
A few users mentioned that heavy cable loads can gradually loosen ports. In some cases, prolonged use in high-traffic workstations revealed minor scratches on the surface, affecting aesthetics but not functionality.
Peripheral Compatibility
86%
Most users find that keyboards, mice, and other USB devices are recognized reliably. Multiple peripherals can be connected simultaneously without conflict, which simplifies shared setups. Buyers appreciate the convenience of integrating existing hardware without additional adapters.
Some buyers experienced initial recognition issues with certain specialized USB devices. Occasional re-plugging was needed to get high-powered peripherals fully functional.
Display Detection Reliability
92%
Users frequently praise the EDID emulation for consistently detecting monitor settings and resolutions. This reduces the need to adjust display preferences when switching PCs. Many mention that the device maintains correct orientation and resolution across different systems.
A few users reported that older monitors sometimes required manual configuration to match expected resolutions. In rare cases, a brief flicker occurs during the first switch, requiring a second confirmation.
User Manual Clarity
77%
23%
Several buyers found the included manual helpful for understanding the setup and switching options. Step-by-step diagrams clarify port layouts and hotkey sequences, aiding new users. It serves as a quick reference for troubleshooting minor issues.
Some users felt the instructions could be more detailed for dual application modes and advanced configurations. A few reported that the terminology was slightly technical for casual users, requiring trial and error to fully understand certain features.

Suitable for:

The AV Access 4KSW21-DM Dual Monitor KVM Switch is ideal for professionals who manage multiple computers simultaneously, such as office workers handling dual desktops or IT administrators maintaining multiple systems. Gamers who require extended or mirrored displays across two PCs can benefit from the smooth 4K@60Hz output and responsive switching. Remote workers and educators running multi-device workflows will appreciate the USB 3.0 hub for shared peripherals and the reliable EDID emulation. Additionally, content creators or designers needing consistent video quality across dual monitors will find this device practical and efficient for daily tasks.

Not suitable for:

This device may not be suitable for users with minimal desk space or those who need highly portable solutions, as the KVM switch requires multiple cables and a stable setup. Individuals relying on specialized or high-powered USB peripherals might encounter occasional recognition issues. Beginners unfamiliar with hotkey switching may face a learning curve, and setups with older or uncommon monitors could require extra configuration to achieve optimal resolution. Casual users with a single computer or single-monitor setup will likely find the dual monitor switch unnecessary and overly complex for their needs.

Specifications

  • Brand: Manufactured by AV Access.
  • Model: Identified as 4KSW21-DM.
  • Type: Dual Monitor KVM Switch for controlling two computers with one set of peripherals.
  • Computers Supported: Compatible with two desktop computers simultaneously.
  • Monitors Supported: Supports dual monitors with extended or mirrored display modes.
  • Video Interface: Uses HDMI connections for high-definition video output.
  • Max Resolution: Supports up to 4K@60Hz, 2K@144Hz, and 1080P@240Hz.
  • USB Ports: Includes one USB 1.1 port and three USB 3.0 ports for peripheral sharing.
  • Switch Control: Allows switching via front panel button or programmable hotkeys.
  • EDID Emulation: Provides built-in EDID emulation to ensure stable display detection.
  • Cables Included: Comes with two USB B-A connection cables.
  • Power: Operates with 12V DC, 3A power input.
  • Operating Systems: Compatible with Windows, macOS, and Linux platforms.
  • Dimensions: Measures 5.61 x 0.91 x 1.03 inches for a compact desktop footprint.
  • Weight: Weighs 3.62 pounds, providing a stable setup.
  • Build: Constructed with a durable casing suitable for desktop use.
  • Application Modes: Supports dual application modes allowing independent use of both monitors.
  • Hotkey Function: Enables seamless switching between connected computers using keyboard shortcuts.
  • Video Quality: Delivers smooth visuals with support for high refresh rates across resolutions.

FAQ

This device allows you to control two computers using a single set of keyboard, mouse, and monitors, supporting extended or mirrored display modes for flexibility.

It works with Windows, macOS, and Linux, making it suitable for mixed-platform setups without needing additional drivers.

You can switch via the front panel button or by using customizable hotkeys, providing quick access without unplugging devices.

Yes, it supports 4K@60Hz and lower resolutions with high refresh rates, ensuring smooth and clear video across both monitors.

Yes, the dual monitor switch features a USB 3.0 hub along with a USB 1.1 port, allowing you to share keyboards, mice, and other devices between PCs.

Setup is generally straightforward, but some users note a minor learning curve with hotkey configuration and initial cable management.

It's ideal for office professionals managing multiple computers, gamers running dual setups, and remote workers or educators needing seamless device access.

Some older or less common monitors may require manual EDID adjustments, but the built-in emulation usually ensures consistent detection.

Yes, the USB 3.0 hub allows several devices to be shared across both computers, although very high-power peripherals may occasionally need re-plugging.

The device has a compact and sturdy design that holds up well on desktops, and most users report reliable performance over extended periods.