Adder AV4PRO-VGA-US – AdderView 4 PRO USB VGA KVM Switch

Product Overview

The Adder AV4PRO-VGA-US is a 4-port USB 2.0 VGA and audio KVM switch from the ADDERView PRO range, letting one keyboard, monitor, and mouse control up to four computers at resolutions up to 1920 x 1200 or 1920 x 1440 @ 60Hz. Its defining capability is Adder's USB True Emulation, which continuously emulates HID devices to every connected computer for fast, reliable switching — making it the right 4-port VGA KVM switch with audio for operators who depend on graphics tablets, jog shuttles, joysticks, and other specialist USB peripherals, not just keyboards and mice.

Product Description

Conventional KVM switches re-enumerate USB devices at every channel change, causing delays and dropped peripherals. The AV4PRO-VGA's True Emulation keeps the keyboard and mouse emulated on each port at all times, so switching is immediate and every computer believes its console never left. Two additional independently switchable USB 2.0 channels let the operator route peripherals — printers, scanners, storage, or HID devices in low, full, and high speed modes — to a different computer than the keyboard and mouse, a genuinely useful workflow for multi-system desks.

Video is handled over standard VGA cabling at up to 1920 x 1200 or 1920 x 1440 @ 60Hz — ample for detailed work in design, post-production, and imaging environments — while an extended DDC EDID profile keeps each computer's graphics card optimized for the connected screen. A 3.5mm stereo audio channel follows the switching, so program audio moves with the selected system.

Channel selection is flexible: keyboard hotkeys, three-button mouse, front panel controls, or the optional RC4 remote. An Options port accepts simple ASCII codes for remote switching from control systems, echoes those codes when channels change so multiple units can switch in synchrony for multi-head configurations, and doubles as the firmware upgrade path. The single-head unit occupies a compact 1U metal case (260 x 150 x 40mm) and runs from the included 5VDC universal power adapter. Dual, Triple, and Quad multi-head variants exist for multi-monitor desks; explore the full Adder Technology collection at Creation Networks.

Key Features

• USB True Emulation — Keyboard and mouse are continuously emulated on every port, delivering fast, reliable switching with no re-enumeration delays.
• High-Resolution VGA — Supports resolutions up to 1920 x 1200 or 1920 x 1440 @ 60Hz for graphics, post-production, and imaging work.
• Independent USB Device Switching — Two switchable USB 2.0 channels can be routed to a different computer than the keyboard and mouse.
• Broad USB 2.0 Support — Connect printers, scanners, tablets, jog shuttles, joysticks, and non-standard HID devices in low, full, and high speed modes.
• Audio Follows Switching — A 3.5mm stereo audio channel moves with the selected channel.
• Extended DDC EDID Profile — Each computer's graphics card stays optimized for the attached display.
• Flexible Channel Selection — Switch via keyboard hotkeys, three-button mouse, front panel buttons, or the optional RC4 remote.
• Options Port for Control and Sync — ASCII-code remote switching, multi-unit synchronization for multi-head systems, and firmware upgrades through one port.
• Compact 1U Metal Case — 260 x 150 x 40mm chassis suits desktops and rack shelves alike.

Typical Applications

• Broadcast studio — single-console control of playout, graphics, and automation systems
• Government space — one operator desk spanning several segregated workstations
• Training room — instructor control of multiple demonstration computers
• Commercial meeting space — operator positions managing several room PCs from one console

Technical Specifications

Frequently Asked Questions

What makes True Emulation different from standard KVM emulation?
True Emulation keeps full keyboard and mouse emulation active on every port continuously, so computers never see the console disconnect. Switching is immediate and specialist HID devices such as tablets and jog shuttles behave correctly.

Can I send a USB peripheral to one computer while typing on another?
Yes. The two switched USB 2.0 channels are independently selectable, so a printer, scanner, or storage device can stay attached to a different computer than the keyboard and mouse.

How do I integrate it with a room control system?
The Options port accepts simple ASCII codes over its 10P10C connector for remote channel switching, and echoes switching events so external systems can track state.

Can I build a multi-monitor switching system?
Yes. Linking Options ports lets two or more units switch in synchrony. Adder also offers dedicated AV4PRO-VGA-DUAL, -TRIPLE, and -QUAD multi-head models.

What cables do I need?
All standard cables: HD-15 VGA, USB Type A-to-B, and 3.5mm audio leads per computer. No proprietary cabling is required.

Which operating systems are supported?
All known operating systems including Windows, DOS, Linux, Unix, BSD, Sun OS, Mac OS, and NetWare — the switch is transparent to the host.