Article Overview
To adjust the resolution on a KVM switch, configure your computer's display settings, ensure compatible cables and adapters, and verify the KVM switch supports your desired resolution and refresh rate.
Step 1: Check Monitor and KVM Specifications
Before adjusting settings, confirm your monitor's supported resolutions and refresh rates in its manual, as advertised high refresh rates may only work at lower resolutions . Ensure your KVM switch supports the resolution you want, especially if using 4K or high-refresh-rate displays .
Step 2: Verify Cables and Adapters
Low-quality or incompatible adapters can limit resolution. Use high-quality HDMI, DisplayPort, or VGA cables that meet the required specifications. For example, 4K 60Hz requires HDMI cables rated for 4K 60Hz and proper gauge (26AWG recommended for 16ft/5m cables), . Ensure all cables are securely connected to the KVM switch and monitors .
Step 3: Adjust Display Settings on Your Computer
Windows:
- Right-click the desktop and select Display Settings.
- Scroll down and click Advanced display settings.
- Choose the desired resolution and refresh rate from the dropdown menu, ensuring it matches your monitor's specifications .
Mac:
- Open System Preferences > Displays.
- Hold the Option key and click Scaled to see additional resolution options.
- For more detailed refresh rate options, use Terminal commands to list supported resolutions .
Step 4: Use the KVM Switch Menu (if available)
Some KVM switches or monitors with built-in KVM functionality allow you to select the input source and adjust resolution via the OSD (On-Screen Display) menu. For example, ASUS monitors let you select the input type (HDMI, DisplayPort, Type-C) and configure KVM settings through System Settings > USB Settings > KVM .
Step 5: Troubleshoot Common Issues
- Resolution drops when switching devices: Ensure each device's output matches the monitor's supported resolution. Using converters (e.g., HDMI to VGA) may limit resolution .
- Monitor flickering: Re-plug devices, try different cables, or lower the resolution temporarily .
- 4K 60Hz not working: Verify both input and output cables support 4K 60Hz and adjust the computer's display settings .
- USB or HDMI ports not working: Test devices directly with the monitor, check cable lengths, and ensure total USB cable length is within limits (typically 10ft/3m), . By following these steps, you can ensure your KVM switch displays the correct resolution and refresh rate for all connected devices.
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