1. Product Overview
The IOGEAR GCS1942H is a 2-Port 4K Dual View KVMP Switch designed to manage two computers from a single console. It allows users to control two HDMI-enabled computers using one keyboard, one mouse, and two HDMI monitors. This device supports 4K resolution (4096 x 2160 @ 60Hz) and includes a built-in USB 3.0 hub for sharing peripherals and audio connectivity.

Image: The IOGEAR GCS1942H KVM Switch integrated into a dual monitor workstation, demonstrating its use with two computers, a keyboard, mouse, and two displays.
2. Package Contents
Verify that all items are present in your package. If any items are missing or damaged, contact IOGEAR customer support.
- 1 x IOGEAR 2-Port 4K Dual View KVMP Switch (GCS1942H)
- 1 x Power Adapter
- 1 x Power Cord
- 4 x HDMI Cables
- 2 x USB 3.0 Cables
- 2 x Audio Cables (3.5mm jack)
- 2 x Microphone Cables (3.5mm jack)
- 1 x Quick Start Guide (not included in this digital manual)
- 1 x Warranty Card (not included in this digital manual)

Image: A visual representation of the IOGEAR GCS1942H KVM Switch and its included accessories, such as cables and power supply.
3. Product Diagram
3.1 Front Panel

Image: The front panel of the KVM switch, highlighting the port selection buttons, status indicators, a USB 3.0 port, and 3.5mm audio jacks for microphone and headphones.
- Port Selection Buttons (1, 2): Used to manually switch between connected computers.
- Status LEDs: Indicate the currently active computer port.
- USB 3.0 Port: For connecting USB peripherals such as flash drives or external hard drives.
- Audio Jacks (Microphone, Headphone): For connecting a headset or separate microphone and speakers.
3.2 Rear Panel

Image: The rear panel of the KVM switch, detailing the connections for two computers, including dual HDMI inputs, USB 3.0 inputs, audio inputs, and the console's dual HDMI outputs, USB 3.0 outputs, and power input.
- Power Input (DC 9V): Connects to the included power adapter.
- Console Ports:
- HDMI Out (x2): Connect to your two primary monitors.
- USB 3.0 (x2): Connect your keyboard and mouse.
- Audio Out (x1): Connect to your speakers or headphones.
- Microphone In (x1): Connect to your microphone.
- Computer Ports (CPU 1, CPU 2): Each computer port includes:
- HDMI In (x2): Connect to the HDMI outputs of your computer.
- USB 3.0 (x1): Connect to a USB port on your computer.
- Audio In (x1): Connect to the audio output of your computer.
- Microphone Out (x1): Connect to the microphone input of your computer.
- Ethernet Port (RJ-45): For network connectivity (if supported by specific models or features).
4. Setup Instructions
Follow these steps to properly set up your IOGEAR GCS1942H KVMP Switch.
- Power Off All Devices: Ensure both computers and the KVM switch are powered off and unplugged from their power sources.
- Connect Monitors to KVM: Connect your two HDMI monitors to the "HDMI Out" ports on the KVM switch's rear panel.
- Connect Keyboard and Mouse to KVM: Connect your USB keyboard and mouse to the dedicated USB 3.0 ports on the KVM switch's rear panel (labeled for console devices).
- Connect Audio Devices to KVM (Optional): If using external speakers/headphones and a microphone, connect them to the respective 3.5mm audio jacks on the KVM switch's rear panel.
- Connect Computers to KVM:
- For Computer 1 (CPU 1):
- Connect two HDMI cables from Computer 1's HDMI outputs to the "HDMI In" ports for CPU 1 on the KVM switch.
- Connect one USB 3.0 cable from Computer 1's USB port to the "USB 3.0" port for CPU 1 on the KVM switch.
- Connect audio cables from Computer 1's audio output to the "Audio In" port for CPU 1, and from Computer 1's microphone input to the "Mic Out" port for CPU 1 (if using audio switching).
- Repeat the above steps for Computer 2 (CPU 2), connecting its cables to the corresponding ports for CPU 2 on the KVM switch.
- For Computer 1 (CPU 1):
- Connect Power: Plug the power adapter into the KVM switch's "DC 9V" input, then plug the power adapter into an electrical outlet.
- Power On Devices: First, power on your monitors, then the KVM switch, and finally, your computers.
The KVM switch should automatically detect the active computer. If not, use the front panel buttons to select a computer.
5. Operating Instructions
The IOGEAR GCS1942H offers multiple methods for switching between connected computers.
5.1 Front Panel Switching
Press the corresponding numbered button (1 or 2) on the front panel of the KVM switch to switch to the desired computer. The LED indicator will illuminate to show the active port.

Image: A workstation illustrating the three primary methods for switching between computers: front panel buttons, keyboard hotkeys, and mouse wheel clicking.
5.2 Keyboard Hotkey Switching
Use the following hotkey combinations to switch between computers:
- Switch to Computer 1: Press Scroll Lock + Scroll Lock + 1
- Switch to Computer 2: Press Scroll Lock + Scroll Lock + 2
- Cycle Through Ports: Press Scroll Lock + Scroll Lock + Enter
- Enable/Disable Audio Switching: Press Scroll Lock + Scroll Lock + A
- Enable/Disable USB Hub Switching: Press Scroll Lock + Scroll Lock + U
Note: The Scroll Lock key must be pressed twice in quick succession before the number or letter key.
5.3 Mouse Switching
To switch between computers using your mouse, quickly double-click the scroll wheel button on your 3-button USB mouse. This will cycle through the connected computers.

Image: Visual details of the KVM switch's features, including the front USB 3.0 port, the concept of asynchronous sharing of USB devices, and the various switching mechanisms.
6. Maintenance
To ensure optimal performance and longevity of your IOGEAR GCS1942H KVMP Switch, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the device. Avoid using liquid cleaners or aerosols, which may damage the unit.
- Ventilation: Ensure the KVM switch is placed in a well-ventilated area to prevent overheating. Do not block any ventilation openings.
- Cable Management: Keep cables organized and free from kinks or excessive bending to prevent signal loss or damage.
- Power Supply: Use only the power adapter provided with the unit. Using an incorrect power adapter may damage the device.
- Environmental Conditions: Avoid exposing the device to extreme temperatures, humidity, or direct sunlight.
7. Troubleshooting
If you encounter issues with your IOGEAR GCS1942H, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No video display on monitors. |
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| Keyboard or mouse not responding. |
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| No audio. |
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| Hotkeys not working. |
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8. Specifications
| Feature | Detail |
|---|---|
| Model Number | GCS1942H |
| KVM Ports | 2 |
| Video Interface | HDMI 2.0 (Dual View) |
| Max Resolution | 4096 x 2160 @ 60Hz (Cinema 4K) |
| HDCP Compliance | HDCP 2.2 |
| USB Hub | USB 3.0 (5Gbps) |
| Audio | 3.5mm Stereo Audio & Microphone |
| Switching Methods | Front Panel Push Buttons, Keyboard Hotkeys, Mouse Wheel |
| Operating System Compatibility | Windows, macOS, Linux |
| Dimensions (L x W x H) | 13.2 x 6.3 x 1.7 inches (33.53 x 16.00 x 4.32 cm) |
| Item Weight | 7.25 pounds (3.29 kg) |
| Power Consumption | 3.17 watts |
| Color | Black |

Image: The KVM switch displayed with logos for Windows, macOS, and Linux, indicating its broad operating system compatibility.
9. Warranty and Support
IOGEAR products are designed for reliability and performance. For information regarding warranty coverage, technical support, or to register your product, please visit the official IOGEAR website or contact their customer service department.
IOGEAR Official Website: www.iogear.com
Please have your model number (GCS1942H) and purchase information ready when contacting support.





