For controlling four computers with a single monitor, keyboard, and mouse, top recommended 4-in-1-out KVM switches include UNITEK HDMI KVM, ATEN CM1284 Multi-View KVMP, and OREI UKM-401MV, all supporting 4K@60Hz and USB 3.0 connectivity.

Top Options

1. UNITEK HDMI KVM Switch (4 In 1 Out)

• Inputs/Outputs: 4 computers, 1 HDMI monitor, 4 USB ports
• Resolution: 4K@60Hz UHD
• Switching: One-click button or hotkeys
• Features: EDID optimization, HDCP 2.2 compliance, intelligent ESD protection
• Pros: Simple setup, reliable switching, supports consoles and TV boxes
• Cons: Limited to single monitor output, may require external power for stable operation 2. ATEN CM1284 4-Port USB HDMI Multi-View KVMP Switch
• Inputs/Outputs: 4 HDMI computers, 2 HDMI displays (primary multi-view, secondary full-screen)
• Resolution: Up to 4K DCI
• Switching: Mouse-driven Boundless Switching, keyboard shortcuts
• Features: Quad-view, PiP/PbP/PoP modes, USB hub for peripherals, daisy chain up to 16 sources
• Pros: Multi-view monitoring, independent USB peripheral switching, ideal for control desks or surveillance
• Cons: More complex setup, higher cost than basic 4-in-1 switches 3. OREI UKM-401MV 4-Port HDMI KVM Switch with Multi-Viewer
• Inputs/Outputs: 4 computers, 1 HDMI monitor, USB 3.1 Gen 1 hub with 3 ports
• Resolution: 4K@60Hz, 18Gbps video bandwidth
• Switching: Front panel buttons, keyboard hotkeys, IR remote, OSD, RS-232, remote access
• Features: Multi-view modes (quad-view, PiP, full-screen), audio extraction via Optical and L/R outputs, EDID management, HDCP 2.2 compliance
• Pros: Flexible control options, high-quality video and audio, suitable for advanced workstations or commercial setups
• Cons: More expensive, may be overkill for simple home setups

Key Considerations

• Resolution: Ensure your monitor and graphics cards support 4K@60Hz if you want UHD performance.
• USB Connectivity: USB 3.0 or 3.1 ports allow fast data transfer for external drives and peripherals.
• Switching Method: Options include physical buttons, hotkeys, OSD, or remote control. Choose based on convenience.
• EDID & HDCP Support: Important for smooth video output and compatibility with protected content like Netflix or Prime Video.
• Power Requirements: Some models may need external power for stable operation, especially with high-power peripherals. For a simple home or office setup, the UNITEK HDMI KVM is cost-effective and easy to use. For professional or multi-monitor environments, the ATEN CM1284 or OREI UKM-401MV provide advanced multi-view and peripheral management features.