KVMChecker
Configuration guide

Mac + PC + 3440×1440 165Hz ultrawide

A high-refresh ultrawide KVM route for a Mac and PC, with the exact timing and adapter checks that matter.

Evidence last checked 12 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
Computer 1Mac
Computer 2Windows PC
Display3440×1440
Refresh165Hz
Preferred videoDisplayPort 1.4
Main riskMac adapter and variable refresh rate (VRR)

The practical answer

Use a DisplayPort 1.4 path where possible. The iDock D23 explicitly lists 3440×1440 at 165Hz. The current DKS202-M24 page lists this ultrawide timing only up to 144Hz, so it does not meet the 165Hz target.

Product assessments

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

Compatible with limitations

AV Access iDock D23

Compatible with stated limitations

What this means for you: The exact 3440×1440 165Hz timing is listed, with variable refresh rate (VRR) and high dynamic range (HDR), but the product is oversized for one monitor and does not keep monitor information active while switching, so displays may reconnect and windows may move.

Computers
2
Displays
3
Video connections
3 × DisplayPort 1.4a per computer
Published 4K ceiling
Single 165Hz · multi 165Hz
USB-C laptop charging
None

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

Product-specific limits
  • Each computer must provide three independent DisplayPort outputs; the KVM cannot add missing display streams.
  • 5120×1440 is stated up to 120Hz and 3440×1440 up to 165Hz.
  • monitor-setting retention (EDID) emulation is not supported, so displays may reconnect and windows may move when switching.
  • It is designed for desktop PCs rather than a single-cable work laptop.
Evidence behind this assessment

8 recorded claims are manufacturer-confirmed, 0 are conservative inferences and 0 remain unresolved. Product evidence last checked 12 August 2026.

View at AV Access
Not compatible

TESmart DKS202-M24

Not supported by published specifications

What this means for you: TESmart currently lists 3440×1440 up to 144Hz for this model, below the required 165Hz timing.

Computers
2
Displays
2
Video connections
DisplayPort 1.4
Published 4K ceiling
Single 240Hz · multi 144Hz
USB-C laptop charging
None

High dynamic range (HDR): supported · Variable refresh (VRR): supported · Keeps monitor settings (EDID): supported

Product-specific limits
  • Single 4K240 and dual 4K144 require Display Stream Compression (DSC); confirm the GPU, monitor, adapters and cables support the target mode.
  • The manufacturer lists 3440×1440 up to 144Hz and 5120×1440 up to 120Hz, so 3440×1440 at 165Hz is above the published limit.
  • Each display requires its own host-side DisplayPort signal.
  • It does not charge a USB-C laptop.
Evidence behind this assessment

7 recorded claims are manufacturer-confirmed, 1 are conservative inferences and 0 remain unresolved. Product evidence last checked 22 August 2026.

View at manufacturer

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

Compatibility constraints

  • The Mac and its adapter must output 3440×1440 at 165Hz before the KVM can pass it.
  • Office-oriented USB-C KVMs in the catalogue cap this resolution at 60Hz.
  • variable refresh rate (VRR) behaviour may differ between macOS and Windows.

Recommended setup sequence

  1. Prove the target timing directly from both computers.
  2. Use the monitor's DisplayPort input and DisplayPort 1.4 cables.
  3. Insert the KVM and retest colour depth, high dynamic range (HDR) and variable refresh rate (VRR).
  4. Check resolution retention after sleep and 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

Mac mini M4 + PC + 3440×1440 165Hz ultrawide Mac + PC + 5120×1440 ultrawide Mixed DisplayPort 1.4 + HDMI 2.1 KVM setup

Sources last checked 12 August 2026. Products were not physically tested by KVMChecker. Firmware, host hardware, adapters and cables can change the result.