Adder AV4PRO-VGA-DUAL-US – 4-Port Dual-Head VGA KVMA Switch

Product Overview

The Adder AV4PRO-VGA-DUAL-US is a 4-port dual-head VGA KVMA switch from the ADDERView 4 PRO MultiScreen range, built to control four dual-monitor computers from a single keyboard, mouse, dual-display console, and audio set. With USB True Emulation and high-resolution analog VGA video up to 1920 x 1200, this USB 2.0 KVM switch suits operators who run intensive multi-screen applications across several machines. It is a dependable choice for desks that need a multi-monitor KVM switch without moving to a full matrix system.

Product Description

The AV4PRO-VGA-DUAL connects up to four dual-head computers over standard VGA and USB cabling and presents them to one operator position. Each computer sees a continuously emulated keyboard and mouse thanks to Adder's USB True Emulation technology, so channel switching is fast and reliable with none of the re-enumeration delays common to basic USB switches.

VGA video supports resolutions up to WUXGA 1920 x 1200 or 1920 x 1440 @ 60Hz, and an extended DDC EDID profile ensures the selected graphics card is always optimized for the attached screens. That matters for detail-critical work such as media and graphic design or imaging review, where every switched channel must render correctly.

Beyond the console keyboard and mouse, two independently switchable USB 2.0 ports and a 3.5mm stereo audio channel can be routed separately, so a printer or storage device can stay attached to one computer while the operator works on another. Channel selection is flexible: front panel buttons, keyboard hotkeys, three-button mouse, or an optional RC4 remote. An Options port handles RS232 ASCII-code switching, synchronization with other AV4PRO units for larger multi-head systems, and firmware upgrades. The 2.5U metal chassis works with all known operating systems, including Windows, Linux, Unix, and macOS. Find compatible Adder accessories and service plans in the Adder Technology collection at Creation Networks.

Key Features

• Four Dual-Head Computers, One Console — Controls four dual-monitor machines from a single keyboard, mouse, dual-display, and audio position.
• USB True Emulation — Continuously emulates keyboard and mouse to every port for instant, reliable switching with no device re-enumeration.
• High-Resolution VGA Video — Supports analog resolutions up to 1920 x 1200 (WUXGA) or 1920 x 1440 @ 60Hz for detail-intensive work.
• Extended DDC EDID Profile — Keeps the switched graphics card optimized for the connected screens at all times.
• Independent USB Device Selection — Two switched USB 2.0 ports can be routed to a different computer than the keyboard and mouse.
• Multiple Switching Methods — Front panel buttons, keyboard hotkeys, three-button mouse, RS232 ASCII codes, or optional RC4 remote.
• Options Port for Expansion — Enables synchronized switching across multiple units, remote serial control, and firmware upgrades.
• Broad OS Compatibility — Operates with all known operating systems including Windows, Linux, Unix, BSD, Sun OS, and macOS.

Typical Applications

• Broadcast studio operator desks managing multiple dual-screen playout or edit machines
• Government space workstations consolidating several secure computers at one desk
• Training room instructor stations switching between demonstration computers
• Commercial meeting space control positions running multiple dual-monitor PCs

Technical Specifications

Frequently Asked Questions

How many monitors does the console support?

The DUAL variant supports a two-monitor console, mirroring the dual-head outputs of each connected computer. Triple and Quad variants exist for three- and four-screen desks.

Does switching cause USB devices to reconnect?

No. USB True Emulation keeps a keyboard and mouse continuously emulated to every computer, so channel changes are immediate without device re-enumeration.

Can I keep a USB peripheral on one computer while working on another?

Yes. The two switched USB 2.0 ports can be routed independently of the keyboard, mouse, and video channel.

What cables does it require?

All standard VGA, USB, and 3.5mm audio cables — no proprietary cabling is needed.

Can multiple units be combined for more screens?

Yes. The Options port synchronizes switching across multiple AV4PRO units to build larger multi-head systems.

Which operating systems are supported?

All known operating systems, including all versions of Windows, Linux, Unix, BSD, Sun OS, and macOS.