Draw four display paths before shopping
For each computer, draw display 1 and display 2 from the host or dock through the KVM to the monitor input. Label connector, protocol, resolution, refresh rate, HDR or VRR need, and cable length. A laptop that supports only one native external display does not gain a second native stream because the KVM has two output sockets.
Keep the dock and KVM jobs separate
A dock expands one computer's ports and may charge it. A KVM switches displays and peripherals between computers. Some devices combine both, but the combined product must still match the laptop's host protocol, power requirement, display count, and the desktop computer's outputs. Price every required adapter and power supply.
Check EDID and inactive-host behavior
KVMs differ in how they present monitor identity to each computer. ATEN's documentation exposes selectable EDID modes, showing why resolution behavior is a product-level capability rather than a generic KVM promise. Test window rearrangement, wake from sleep, hotkeys, audio, webcam, storage, and whether the inactive host still sees stable displays.
Prove the simpler fallback first
If each monitor already has two usable inputs, connect both computers directly and switch only keyboard and mouse with a USB switch. Test that routine for several workdays. Move to a full KVM only when the extra display switching saves enough repeated friction to justify the compatibility and cable complexity.
Buying decision: the decision
Start with HDMI or DisplayPort version per monitor and resolution, refresh, and HDR, not the longest feature list. Buy only when the product can share two displays and peripherals between computers without reconnecting the desk, the setup is realistic, and the household accepts many high-bandwidth cables, firmware, EDID quirks, power supply, hotkey conflicts, and troubleshooting after GPU or monitor changes. Skip it when either computer cannot provide two matching outputs, required resolution exceeds the switch, or monitor input switching plus a USB switch is simpler.
Compatibility and fit: the decision
Compatibility passes only when all four checks are confirmed: HDMI or DisplayPort version per monitor; resolution, refresh, and HDR; USB device class and hotkeys; EDID emulation, cable count, and computer outputs. Verify the exact model and variant, then test the limiting condition before the return window closes.
Ownership cost and maintenance: the decision
Budget beyond checkout for many high-bandwidth cables, firmware, EDID quirks, power supply, hotkey conflicts, and troubleshooting after GPU or monitor changes. The disciplined choice is the one that remains serviceable and recoverable after normal wear, cleaning, updates, consumables, or a failed part.
Setup and daily workflow: the decision
Use this order: draw every video and USB connection, use known-good short cables, test each computer alone, then validate wake, switching, and monitor arrangement. Keep the previous routine available until normal operation and a safe recovery test both work.