Adder AV4PRO-VGA
The ADDER AV4PRO-VGA is a Professional VGA, USB 4 port switch with USB True Emulation Technology. It is a is a professional grade KVMA switch delivering ultimate flexibility for users who wish to share a high resolution screen and modern USB peripherals between a multiplicity of computers.
The AV4PRO-VGA-US is designed to enable four computers to be controlled from a single high resolution KVM console using high definition analogue VGA video links. The switch makes use of Adder's True Emulation technology which enables USB HID devices to be continuously emulated to each computer. This unique technology enables instantaneous and reliable hotkey switching whilst also supporting the extra keys and features of enhanced keyboards and mice. Furthermore, the AdderView includes two independently switchable USB 2.0 channels and an audio channel, giving the user the flexibility to attach selected peripherals to different computers.
Adder AV4PRO-VGA Features
High Definition VGA with extended profile DDC EDID
The AdderView Pro AV4PRO-VGA features high resolution VGA video with extended profile DDC EDID. The extended DDC EDID profile ensures that the switched graphics card is always optimised to work with your screen. The VGA capabilities enable users to work at very high resolutions including WUXGA (1920 x 1200) or (1920 x 1440) for intensive applications such as media/graphic design or detailed medical imaging.
True USB 2.0 emulation
Unlike most KVM switches, which only support the most basic keyboard and mouse features, Adder's revolutionary 'True Emulation' allows you to use the extra function keys, wheels, buttons and controls that are commonly found on modern keyboards and mice. You can also use any other USB interface device including graphics tablets, jog shuttles, joysticks, 3D explorers, and wireless bluetooth keyboard & mouse*.
Independent USB & Audio device switching
The AdderView Pro AV4PRO-VGA includes two independently switchable USB 2.0 channels and an audio channel, giving the user the flexibility to attach selected peripherals to different computers. For example, use the KVMA console to work on one computer whilst your USB peripherals are connected to other computers and your speakers are playing music from yet another.
Broad High Speed device support - Transparent USB 2.0 Hub
An integrated transparent 2-port USB 2.0 hub allows a vast range of USB devices can be connected to the AV4PRO-VGA from non standard keyboard / mouse devices to flash drives, printers and scanners.
Fast & Reliable Switching
Country code reporting, extended DDC EDID profile and continuous keyboard and mouse emulation ensure faultless operation. The USB 2.0 switching action has also been carefully engineered to ensure maximum computer reliability when connecting and disconnecting USB devices.
Channel selection options
The AdderView Pro AV4PRO-VGA can be switched using the front panel buttons, selectable keyboard hotkeys, 3 button mice, an On-Screen-Display (OSD), or using simple ASCII codes via serial RS232. Optionally, you can also use the RC4 remote switch to make your selection. These switching options allow you to rapidly reassign connected devices to any of the connected computers.
Multi-platform support
The AV4PRO-VGA works with all known software and computer platforms, with PS/2, USB and Sun, including Windows (all), DOS, Linux, Unix, BSD, all Sun OS, all Mac OS, NetWare, etc.
Plug and Play
AdderView Pro KVM devices are delivered in a zero configuration state so you can plug them in and start working on them straight away. There is no need for drivers or software to be installed.
Serial RS232 port for control, synchronization and upgrade
- Remotely switch AV4PRO-VGA using simple ASCII codes
- Integration with RS232 controlled power switches to provide a complete hard reboot function
- Flash upgrade
Expand up to a 5-monitor KVM Switch
AV4PRO-VGA can be linked with another Adder AV4PRO unit to create up to a 4-port dual-monitor, triple-monitor, quad-monitor, or 5-monitor KVM Switching system, by using a VSC41 synchronisation cable.
AV4PRO-VGA-US Package Contents

- (1) AV4PRO-VGA KVM Switch
- (1) Power adapter (12.5W) and US-specific power lead
- (1) Quick start guide and Safety document
- (4) Self-adhesive rubber feet
- (1) 2-Year Limited Warranty & Lifetime World Class Support
AV4PRO-VGA Resources
Adder AV4PRO-VGA Datasheet (PDF)
Adder AV4PRO-VGA Manual (PDF)
Adder AV4PRO-VGA Specifications
| Mechanical | |
| Height | 1.7 in. (44 mm.) |
| Width | 9.17 in. (233 mm.) |
| Depth | 4.53 in. (115 mm.) |
| Physical Design | 1U high metal case |
| Hardware Compatibility | All computers with USB interfaces |
| Software Compatibility | Operates with all known software and operating systems including Windows (all), DOS, Linux, Unix, BSD, all Sun OS, all Mac OS, NetWare etc. |
| Computer connections at switch | USB 2.0 type B, Hi Res VGA (up to 4 connections) 3.5mm stereo jack |
| Local KVM Console Connection Video | |
| Video | 1x VGA (single monitor) |
| Keyboard/Mouse | 2 x USB type A |
| Switched USB | 2 x USB 2.0 type A |
| Audio | 3.5mm stereo jack |
| Other Connections | Options (flash upgrade, sync with other AV4PRO-VGA and RS232 triggered power switches): Modular 10P10C |
| Power | 2.5mm DC jack (power adapter included), 100-24-VAC 50/60Hz input to power adapter, 5VDC 2A output from power adapter |
| Operating Temperature | 0°C to 40°C / 32°F to 104°F |
| Approvals | CE, FCC |
The AV4PRO-VGA is also known as the AV4PRO-VGA-US.
The ADDER AV4PRO-VGA is a Professional VGA, USB 4 port switch with USB True Emulation Technology. It is a is a professional grade KVMA switch delivering ultimate flexibility for users who wish to share a high resolution screen and modern USB peripherals between a multiplicity of computers.
The AV4PRO-VGA-US is designed to enable four computers to be controlled from a single high resolution KVM console using high definition analogue VGA video links. The switch makes use of Adder's True Emulation technology which enables USB HID devices to be continuously emulated to each computer. This unique technology enables instantaneous and reliable hotkey switching whilst also supporting the extra keys and features of enhanced keyboards and mice. Furthermore, the AdderView includes two independently switchable USB 2.0 channels and an audio channel, giving the user the flexibility to attach selected peripherals to different computers.
Adder AV4PRO-VGA Features
High Definition VGA with extended profile DDC EDID
The AdderView Pro AV4PRO-VGA features high resolution VGA video with extended profile DDC EDID. The extended DDC EDID profile ensures that the switched graphics card is always optimised to work with your screen. The VGA capabilities enable users to work at very high resolutions including WUXGA (1920 x 1200) or (1920 x 1440) for intensive applications such as media/graphic design or detailed medical imaging.
True USB 2.0 emulation
Unlike most KVM switches, which only support the most basic keyboard and mouse features, Adder's revolutionary 'True Emulation' allows you to use the extra function keys, wheels, buttons and controls that are commonly found on modern keyboards and mice. You can also use any other USB interface device including graphics tablets, jog shuttles, joysticks, 3D explorers, and wireless bluetooth keyboard & mouse*.
Independent USB & Audio device switching
The AdderView Pro AV4PRO-VGA includes two independently switchable USB 2.0 channels and an audio channel, giving the user the flexibility to attach selected peripherals to different computers. For example, use the KVMA console to work on one computer whilst your USB peripherals are connected to other computers and your speakers are playing music from yet another.
Broad High Speed device support - Transparent USB 2.0 Hub
An integrated transparent 2-port USB 2.0 hub allows a vast range of USB devices can be connected to the AV4PRO-VGA from non standard keyboard / mouse devices to flash drives, printers and scanners.
Fast & Reliable Switching
Country code reporting, extended DDC EDID profile and continuous keyboard and mouse emulation ensure faultless operation. The USB 2.0 switching action has also been carefully engineered to ensure maximum computer reliability when connecting and disconnecting USB devices.
Channel selection options
The AdderView Pro AV4PRO-VGA can be switched using the front panel buttons, selectable keyboard hotkeys, 3 button mice, an On-Screen-Display (OSD), or using simple ASCII codes via serial RS232. Optionally, you can also use the RC4 remote switch to make your selection. These switching options allow you to rapidly reassign connected devices to any of the connected computers.
Multi-platform support
The AV4PRO-VGA works with all known software and computer platforms, with PS/2, USB and Sun, including Windows (all), DOS, Linux, Unix, BSD, all Sun OS, all Mac OS, NetWare, etc.
Plug and Play
AdderView Pro KVM devices are delivered in a zero configuration state so you can plug them in and start working on them straight away. There is no need for drivers or software to be installed.
Serial RS232 port for control, synchronization and upgrade
- Remotely switch AV4PRO-VGA using simple ASCII codes
- Integration with RS232 controlled power switches to provide a complete hard reboot function
- Flash upgrade
Expand up to a 5-monitor KVM Switch
AV4PRO-VGA can be linked with another Adder AV4PRO unit to create up to a 4-port dual-monitor, triple-monitor, quad-monitor, or 5-monitor KVM Switching system, by using a VSC41 synchronisation cable.
AV4PRO-VGA-US Package Contents

- (1) AV4PRO-VGA KVM Switch
- (1) Power adapter (12.5W) and US-specific power lead
- (1) Quick start guide and Safety document
- (4) Self-adhesive rubber feet
- (1) 2-Year Limited Warranty & Lifetime World Class Support
AV4PRO-VGA Resources
Adder AV4PRO-VGA Datasheet (PDF)
Adder AV4PRO-VGA Manual (PDF)
Adder AV4PRO-VGA Specifications
| Mechanical | |
| Height | 1.7 in. (44 mm.) |
| Width | 9.17 in. (233 mm.) |
| Depth | 4.53 in. (115 mm.) |
| Physical Design | 1U high metal case |
| Hardware Compatibility | All computers with USB interfaces |
| Software Compatibility | Operates with all known software and operating systems including Windows (all), DOS, Linux, Unix, BSD, all Sun OS, all Mac OS, NetWare etc. |
| Computer connections at switch | USB 2.0 type B, Hi Res VGA (up to 4 connections) 3.5mm stereo jack |
| Local KVM Console Connection Video | |
| Video | 1x VGA (single monitor) |
| Keyboard/Mouse | 2 x USB type A |
| Switched USB | 2 x USB 2.0 type A |
| Audio | 3.5mm stereo jack |
| Other Connections | Options (flash upgrade, sync with other AV4PRO-VGA and RS232 triggered power switches): Modular 10P10C |
| Power | 2.5mm DC jack (power adapter included), 100-24-VAC 50/60Hz input to power adapter, 5VDC 2A output from power adapter |
| Operating Temperature | 0°C to 40°C / 32°F to 104°F |
| Approvals | CE, FCC |
The AV4PRO-VGA is also known as the AV4PRO-VGA-US.

