KKVMChecker
Configuration guide

Four computers + three DisplayPort monitors

A four-computer, three-monitor DisplayPort topology where every host must supply three independent signals and high-refresh modes need complete-chain verification.

Evidence last checked 23 August 2026. Specifications assessed, not physically tested.

Manufacturer confirmed stated in a primary source Inferred derived conservatively from published specifications Unresolved the exact combination is not proved Evidence policy
Computers4
Displays3 extended
Host video3 × DisplayPort per computer
Published ceilingUp to 4K144
USBUSB 3.2 Gen 1
Main riskTwelve host-side video paths

The practical answer

TESmart DKS403-M24 is the current direct catalogue match for four computers and three DisplayPort monitors. Its topology and headline 4K144 capability are manufacturer-confirmed, but the KVM cannot create missing host outputs. Treat refresh above 120Hz as an end-to-end Display Stream Compression (DSC) check across every active computer, adapter, cable and monitor.

Product assessments

These statuses apply to this exact configuration, not to the product in every possible setup.

Compatible with limitations

TESmart DKS403-M24

Compatible with stated limitations

What this means for you: The manufacturer documents four computer inputs, three DisplayPort monitor outputs, USB 3.2 Gen 1 and monitor-setting retention (EDID). Every computer still needs three independent DisplayPort signals, and high-refresh operation depends on the complete chain.

Computers
4
Displays
3
Video connections
3 × DisplayPort 1.4 per computer
Published 4K ceiling
Single 144Hz · multi 144Hz
USB-C laptop charging
None

High dynamic range (HDR): not confirmed · Variable refresh (VRR): not confirmed · Keeps monitor settings (EDID): supported

Product-specific limits
  • Every computer needs three independent DisplayPort-capable outputs for three extended displays.
  • The 4K144 headline does not prove every three-display GPU, adapter, cable and monitor combination; verify the complete signal chain.
  • It does not charge a USB-C laptop, and high dynamic range and variable refresh are not confirmed.
Evidence behind this assessment

6 recorded claims are manufacturer-confirmed, 1 are conservative inferences and 2 remain unresolved. Product evidence last checked 23 August 2026.

View at manufacturer

Different computer, display or refresh rate? Check your exact setup before using a product link.

Compatibility constraints

  • Each of the four computers needs three independent DisplayPort-capable outputs for three extended desktops.
  • The manufacturer’s maximum timing does not prove every GPU, adapter, cable and monitor combination.
  • No USB-C laptop charging is provided, and a Mac needs one native display stream per monitor.

Recommended setup sequence

  1. Prove all three target display modes directly from each computer.
  2. Map and label three complete DisplayPort paths for every host.
  3. Connect the KVM using certified cables, starting at 4K60.
  4. Raise refresh one display at a time, then test monitor-setting retention (EDID) retention, wake and USB switching.

Technical term unclear? See KVM terms explained for plain-English definitions and practical consequences. Compare the current 4K and ultrawide KVM timing evidence before relying on a headline resolution.

Sources checked

The primary documents supporting the decisive compatibility claims on this page. Commercial links are kept separate.

Related configurations

Three monitors + gaming PC + work laptop Mixed DisplayPort 1.4 + HDMI 2.1 KVM setup Mac dual extended displays through a KVM

Sources last checked 23 August 2026. Products were not physically tested by KVMChecker. Firmware, host hardware, adapters and cables can change the result.