Adder Technology

Adder AdderView PRO AV4PRO

Expert rating8 / 10

Port Count:: 4-8 computers
Video Standard:: DVI-I / VGA
Max Resolution:: 1920x1200
USB Hub Ports:: 2

Consumercarts is reader-supported. Learn more

Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.

Manufacturer: Adder Technology Last updated: September 12, 2026

Adder AdderView PRO AV4PRO Review

The Adder AdderView PRO AV4PRO is a modular KVM switch built to control 4 to 8 computers across 1 to 4 monitors, sold in single, dual, triple and quad-head DVI/VGA variants for control rooms.

Adder built the AV4PRO family for operators who outgrow a simple desk switch fast, control room technicians juggling four to eight machines across a bank of monitors, not two PCs and one screen. The base unit handles 4 computers directly, but cascading two units together gets you to 8 without buying a whole new switch, which is the kind of headroom you don't get from a fixed 4-port desk unit like the Avocent SC945H. Where it differs sharply from something like the Rose MPC-4U4V is that the AV4PRO switches full video signal to whichever head is active rather than compositing all sources into one multi-viewer image, so you get native full resolution per source at the cost of true side-by-side viewing.

Modular Head Configurations

Adder sells the AV4PRO as separate SKUs for single, dual, triple and quad-head setups, so a security operations center can start with two monitors and add a third or fourth head later without replacing the whole switch, just the head module.

Built for Control Rooms, Not Desks

RS232 remote control and a metal 1U rack chassis point this at broadcast and NOC environments rather than a home office, where a compact desk switch like the StarTech SV211HDUA2 would be the better fit.

Comparison to Alternatives

Versus the Avocent SC945H, that's a fixed 4-computer, dual-monitor unit at a lower price, worth it if you don't need the AV4PRO's cascade-to-8 headroom. Versus the Rose MPC-4U4V, that's a true multi-viewer compositing four sources onto one screen simultaneously, worth it if simultaneous viewing matters more than full-resolution switching.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Expert rating8 / 10

A serious modular KVM built for control rooms that need to scale past 4 computers, overkill for a simple desk setup.

Best for

Control room and NOC operators managing 4-8 machines across multiple monitors
Broadcast and security operations needing rack-mounted, RS232-controllable switching
Facilities wanting to expand from 4 to 8 computers without replacing hardware

Not for

Single-desk users who only need to switch between two computers
Buyers needing HDMI or DisplayPort instead of DVI/VGA
Budget shoppers, since modular head configurations cost more than a fixed 4-port switch

Specifications

What these specs mean

Identity

Brand	Adder
Model Number	AV4PRO
Switching Method	Front-panel button, hotkey, RS232 remote

Topology

Computers Supported	4 computers, cascadable to 8
Displays Per Computer	1 displays
KVM Segment	Desk

Video & Features

Video Standard	DVI-I / VGA
Max Resolution	1920x1200 per head
USB Hub Ports	2
Audio Support	Yes

Per display capability

Max Resolution Single Display	1920x1200

Physical and power

Housing Material	Metal, 1U rack-mountable

FAQs

What are the key specifications of the Adder AdderView PRO AV4PRO (4-8 Computers / 1-4 Monitors / DVI-VGA / Modular Multi-Head)?

Key specs for the Adder AdderView PRO AV4PRO: USB Hub Ports 2 (USB 2.0), Max Resolution 1920x1200 per head, Max Resolution Per Display 1920x1200, Audio Support Yes, Port Count 4 computers, cascadable to 8, Switching Method Front-panel button, hotkey, RS232 remote.

Who is the Adder AdderView PRO AV4PRO (4-8 Computers / 1-4 Monitors / DVI-VGA / Modular Multi-Head) best suited to?

Best suited to: Control room and NOC operators managing 4-8 machines across multiple monitors; Broadcast and security operations needing rack-mounted, RS232-controllable switching; Facilities wanting to expand from 4 to 8 computers without replacing hardware.

What are the drawbacks of the Adder AdderView PRO AV4PRO (4-8 Computers / 1-4 Monitors / DVI-VGA / Modular Multi-Head)?

Not the best fit for: Single-desk users who only need to switch between two computers; Buyers needing HDMI or DisplayPort instead of DVI/VGA; Budget shoppers, since modular head configurations cost more than a fixed 4-port switch.