The ATEN CS1842 2-Port USB 3.0 4K HDMI Dual Display KVMP™ Switch delivers instant desktop access to two HDMI computers from a single USB keyboard, mouse, and two HDMI monitors, while sharing two USB peripherals for efficient multi-system workflows. Built for high-performance environments such as CGI, graphic design, video post-production, and CAD engineering, the CS1842 supports 4K UHD (3840 × 2160 @ 60 Hz) and 4K DCI (4096 × 2160 @ 60 Hz), and features ATEN Video DynaSync™ to optimise resolution and keep extended-desktop windows consistent when switching between ports. It also includes a 2-port USB 3.1 Gen 1 hub (5 Gbps) and multiple switching options, including pushbuttons, hotkeys, mouse, remote port selector, and RS-232 commands, for fast, flexible control. 

Key Features

• 2-Port Dual-Display KVMP™ Switching: Control 2 HDMI computers using 1 USB keyboard/mouse and two HDMI monitors, while sharing two USB peripherals. 
• True 4K Video Support: Supports 4K UHD (3840 × 2160 @ 60 Hz) and 4K DCI (4096 × 2160 @ 60 Hz) for vivid, high-detail visuals. 
• Video DynaSync™ Technology: Optimises display resolution, speeds up switching, and helps prevent extended-desktop windows reverting to default configurations when switching ports. 
• Built-in USB 3.1 Gen 1 Hub: Integrated 2-port hub with SuperSpeed 5 Gbps data transfer for shared peripherals.
• Multiple Switching Methods: Computer selection via pushbuttons, hotkeys, mouse (USB 3-key wheel mouse under mouse emulation mode), remote port selector, and RS-232 commands.
• Independent Switching: Independent switching of KVM, USB peripheral, and stereo audio focus (note: HD audio via HDMI cannot be switched independently). 
• Keyboard/Mouse Emulation or Bypass: Supports console keyboard and mouse emulation / bypass features.
• Quad Display Expansion: Supports quad display by connecting two Dual Display KVM switches (daisy-chain capability). 
• HDMI & HDCP Compliant + HD Audio: HDMI compliant, HDCP compliant, and supports HD audio.
• Power-On Detection + Auto Scan: Power on detection and Auto Scan Mode for monitoring connected computers.
• Firmware Upgradable: Supports firmware upgrades for long-term maintainability.

What’s Included

• (1) ATEN CS1842 2-Port USB 3.0 4K HDMI Dual Display KVMP™ Switch 
• (1) Power Adapter 
• (1) Remote Port Selector 
• (1) User Instructions

Specifications

CS1842 (2-Port USB 3.0 4K HDMI Dual Display KVMP™ Switch)
Computer Connections	2
Port Selection	Pushbutton, Hotkey, Mouse, RS-232 commands, Remote Port Selector
Console Ports	2 × USB Type-A Female (Black) 2 × HDMI Female (Black) 2 × 3.5mm Audio Jack Female (Green; 1 × front, 1 × rear) 2 × 3.5mm Audio Jack Female (Pink; 1 × front, 1 × rear)
KVM (Computer) Ports	2 × USB 3.1 Gen1 Type-B Female (Blue) 4 × HDMI Female (Black) 2 × 3.5mm Audio Jack Female (Green) 2 × 3.5mm Audio Jack Female (Pink)
USB Hub	2 × USB 3.1 Gen1 Type-A Female (Blue; 1 × front, 1 × rear)
Daisy Chain Port	1 × RJ-45 Female
Remote Port Selector	1 × 2.5mm Audio Jack Female
Video	Up to 4096 × 2160 @ 60 Hz; 2560 × 1440 @ 144 Hz
Scan Interval	1–99 seconds (Default: 5 sec.)
Power Consumption	DC 12V: 3.17W
Operating Temperature	0 – 40°C
Storage Temperature	-20 – 60°C
Humidity	0 – 80% RH, Non-condensing
Housing	Metal
Weight	1.60 kg
Dimensions (L × W × H)	33.50 × 16.05 × 4.40 cm

Application Examples

CGI / Creative Workstations	Switch between two production systems while keeping dual HDMI displays and shared USB peripherals consistent for daily workflows.
Graphic Design & Video Post-Production	Maintain high-resolution dual-monitor output with fast switching and shared SuperSpeed USB devices.
CAD / Engineering Desks	Operate two systems from one console, with Video DynaSync™ helping preserve optimal display behaviour across switches.
Multi-Display Monitoring	Daisy-chain two Dual Display switches to scale up to quad display monitoring where more screens are required.

The ATEN CS1842 2-Port USB 3.0 4K HDMI Dual Display KVMP™ Switch is a feature-rich dual-display desktop KVM solution, combining true 4K output, fast SuperSpeed USB sharing, flexible switching control, and ATEN Video DynaSync™ for smooth, consistent multi-system operation.