Adder AV4PRO-DVI-QUAD
Expert rating8 / 10
- Computers:
- 4
- Monitors:
- 4
- Video Standard:
- DVI
- Max Resolution:
- 2560x1600 @ 60Hz
- USB Hub Ports:
- 2
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Manufacturer: Adder Technology Last updated: September 12, 2026
Where to buy
- CDWGo to store
Adder AV4PRO-DVI-QUAD Review
The Adder AV4PRO-DVI-QUAD is a full four-head DVI KVM switch for 4 computers and 4 monitors, currently.
This is the top of the AV4PRO DVI head-count ladder, all four monitors switch together across four machines, which is about as far as a single-user desk KVM reasonably needs to go before a true matrix system like the AdderView DDX30 makes more sense. It costs noticeably more than the AV4PRO-DVI-TRI for that fourth head, so buyers should be certain they need all four monitors switched rather than leaving one on a dedicated system.
Full Quad-Monitor Switching
All four displays move together between the four connected computers, keeping an identical quad-monitor layout regardless of which machine is active, useful for trading and surveillance walls.
The Ceiling of the AV4PRO Line
Four heads is the maximum single-switch configuration in the AV4PRO family; anyone needing more monitors or more independent users should look at a true matrix system instead.
Comparison to Alternatives
Versus the Adder AV4PRO-DVI-TRI, that drops to three heads at a lower price, worth it if the fourth monitor isn't switched. Versus the AdderView DDX30, that's a full matrix system for many users and computers, worth it once a single quad-head desk switch isn't enough.
Our verdict
Reviewed by Burooj Alam. Rated by us, not by users.
Expert rating8 / 10
The right choice for a genuine quad-monitor, 4-computer desk, priced as a premium specialty switch.
Best for
- Trading and surveillance desks running full quad-monitor spreads across 4 machines
- Control rooms needing RS232-automatable quad-head DVI switching
- Analysts who need all four displays to follow the active computer
Not for
- Triple-monitor or smaller setups (the TRI variant is cheaper)
- Budget buyers, given the premium quad-head pricing
- Anyone needing more than 4 computers or independent multi-user access
Specifications
What these specs meanHow much this switch can do compared with other desk KVM switches, rated from its specifications.
Identity
| Brand | Adder |
|---|---|
| Model Number | AV4PRO-DVI-QUAD |
| Switching Method | Front-panel buttons, keyboard hotkeys, three-button mouse, RS232 ASCII codes, optional RC4 remote |
Topology
| Computers Supported | 4 computers |
|---|---|
| Displays Per Computer | 4 displays |
| Total Video Inputs | 16 |
| Total Video Outputs | 4 |
| Video Path Type | Independent heads |
| KVM Segment | Desk |
Video & Features
| Video Standard | DVI |
|---|---|
| Max Resolution | 2560x1600 @ 60Hz |
| USB Hub Ports | 2 |
| Audio Support | Yes |
Video interface
| Video Connector | DVI |
|---|---|
| Video Interface Version | DVI |
Per display capability
| Max Resolution Single Display | 2560x1600 |
|---|---|
| Max Refresh At Max Resolution | 60 Hz |
Display continuity
| EDID Emulation | Yes (learns each monitor) |
|---|
USB peripheral switching
| USB Switching Speed | USB 2.0 |
|---|---|
| Shared USB Ports | 2 ports |
| Dedicated HID Ports | 2 ports |
| HID Emulation | Yes |
Switching control
| Button Switching | Yes |
|---|---|
| Hotkey Switching | Yes |
| Mouse Or Cursor Switching | Yes |
| Serial Or Network Control | RS232 |
Audio
| Analog Audio Jacks | Yes |
|---|
Physical and power
| Rack Mountable | Yes |
|---|---|
| External Power Required | Yes |
In the box and price
| Price | 1955.70 USD |
|---|
FAQs
What are the key specifications of the Adder AV4PRO-DVI-QUAD (4-Port / 4 Monitors / DVI Quad-Head KVM)?
Key specs for the Adder AV4PRO-DVI-QUAD: Shared USB Ports 2 ports, Dedicated HID Ports 2 ports, Max Resolution 2560x1600 @ 60Hz, Max Refresh At Max Resolution 60 Hz, Max Resolution Per Display 2560x1600, Audio Support Yes.
Who is the Adder AV4PRO-DVI-QUAD (4-Port / 4 Monitors / DVI Quad-Head KVM) best suited to?
Best suited to: Trading and surveillance desks running full quad-monitor spreads across 4 machines; Control rooms needing RS232-automatable quad-head DVI switching; Analysts who need all four displays to follow the active computer.
What are the drawbacks of the Adder AV4PRO-DVI-QUAD (4-Port / 4 Monitors / DVI Quad-Head KVM)?
Not the best fit for: Triple-monitor or smaller setups (the TRI variant is cheaper); Budget buyers, given the premium quad-head pricing; Anyone needing more than 4 computers or independent multi-user access.
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