Name: 4×2 HDMI 2.0 Matrix Switcher with WebGUI, Telnet & RS-232 Control
Brand: KanexPro
SKU: HDMX42-18G

Overview

Basic 4×2 HDMI matrix switchers offer front panel and IR control — but commercial integrators increasingly require IP-based management for remote operation, diagnostics, and control system integration. The KanexPro HDMX42-18G delivers a full three-interface control suite — WebGUI, Telnet, and RS-232 — alongside front panel and IR, giving integrators complete flexibility to manage the unit from any network-connected device or third-party control system.

Supporting 4K@60Hz 4:4:4 with 18Gbps bandwidth and HDCP 2.2 compliance, the HDMX42-18G routes any of four HDMI sources to two independent displays at full 4K fidelity. Apple HDCP mode allows non-HDCP content from Apple and similar devices to display on non-HDCP screens without signal loss. Seven EDID presets — including sink-learned and resolution-specific options — handle mixed source and display environments. Compact half-rack form factor fits cleanly into any AV furniture or rack install.

Key features

HDMI 2.0 and HDCP 2.2 compliant — 18Gbps / 600MHz bandwidth
Routes 4 HDMI inputs to 2 independent HDMI outputs at up to 4K@60Hz 4:4:4
WebGUI control — full routing, EDID, HDCP, naming, and network settings via browser
Telnet control — CLI access for scripting and control system integration
RS-232 control (115200 baud) — full command set for third-party control system integration
Apple HDCP mode per input — allows non-HDCP content from Apple devices on non-HDCP displays
EDID management: 7 presets (SINK A/B, 720P, 1080P, 4K_3G, 4K_Y420, 4K_6G) — ALL or per-input APPOINT mode
Front panel button control with green/red power LED and source indicator LEDs
IR remote control (CR-155) with IR extender cable included
HDMI IN 1 accessible from front panel; HDMI IN 2–4 on rear

Specification
Technical
Video Bandwidth	600 MHz / 18 Gbps
Input Ports	4× HDMI Type A
Output Ports	2× HDMI Type A
Control Interfaces	1× RS-232 (DE-9) • 1× IP Control (RJ-45) • 1× IR Extender (3.5mm)
Service Port	1× USB 2.0 (firmware update)
Supported Resolutions	480i@60Hz – 4K@60Hz (4:4:4, 8-bit) • VGA@60Hz – WUXGA@60Hz
Baud Rate	115200 bps
IR Frequency	30–50 kHz
ESD Protection	±12kV (Air) • ±8kV (Contact)
Mechanical
Housing	Metal, Black
Dimensions	9.45″ × 1.69″ × 4.09″ (240 × 43 × 104mm)
Net Weight	1.75 lbs (796g)
Power Supply	DC 5V/2.6A (CE/FCC/UL certified)
Power Consumption	7.1W
Operating Temp	32°F–104°F (0°C–40°C)
Storage Temp	−4°F–140°F (−20°C–60°C)
Relative Humidity	20–90% RH (non-condensing)
Certifications
Regulatory	CE • FCC • UL
Cable Length
1080p@60Hz (12-bit)	Up to 33 ft (10m)
4K@60Hz (4:4:4, 8-bit)	Up to 10 ft (3m)
Package Contents
1×	4×2 HDMI Matrix Switcher
1×	IR Remote (CR-155)
1×	IR Extender Cable
1×	5V/2.6A DC Power Adapter
1×	Operation Manual

4×2 HDMI 2.0 Matrix Switcher with WebGUI, Telnet & RS-232 Control panel drawing

4×2 HDMI 2.0 Matrix Switcher with WebGUI, Telnet & RS-232 Control system diagram

4×2 HDMI 2.0 Matrix Switcher with WebGUI, Telnet & RS-232 Control applications

Manual~~Installation and operation~~

Spec sheet~~Full specification~~

Sales sheet~~For bid packages~~

What is the maximum video bandwidth of the HDMX42-18G?

600MHz / 18Gbps, supporting resolutions from 480i@60Hz up to 4K@60Hz (4:4:4, 8-bit), and VGA@60Hz up to WUXGA@60Hz.

How many EDID presets does the HDMX42-18G offer?

Seven EDID presets: SINK A, SINK B, 720P, 1080P, 4K_3G, 4K_Y420, and 4K_6G, selectable in ALL mode or per-input APPOINT mode.

What control methods does the HDMX42-18G support?

WebGUI (browser-based routing, EDID, HDCP, naming, and network settings), Telnet CLI, RS-232 (115200 baud, full command set), front panel buttons, and IR remote (CR-155).

What is the default IP address for WebGUI and Telnet control?

192.168.1.50, reachable via the rear CONTROL (RJ-45) port.

Which HDMI input is accessible from the front panel?

HDMI IN 1 is on the front panel; HDMI IN 2, 3, and 4 are on the rear panel.

How is the HDMX42-18G powered?

Via the included DC 5V/2.6A power adapter connected to the rear DC 5V port; power consumption is 7.1W.

An Apple TV is not displaying on a non-HDCP monitor, what should I do?

Enable Apple HDCP mode via the WebGUI HDCP tab, or send the RS-232 command HDCPIN [x] 1, where x is the input number.

How do I access the WebGUI if it is not loading?

Connect to the CONTROL (RJ-45) port and navigate to 192.168.1.50 in a browser. No password is required by default.

What makes the HDMX42-18G suited for mixed Apple and non-HDCP display environments?

Its per-input Apple HDCP mode allows non-HDCP content from Apple devices to display on non-HDCP displays without additional HDCP-stripping hardware.

Why choose the HDMX42-18G over a simpler HDMI switch for AV integration?

It offers three independent control paths, WebGUI, Telnet, and RS-232, plus front panel and IR control, giving integrators flexibility to fit browser control, control processors, and CLI scripting into a single 4x2 matrix.

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