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.

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, while the DKS202-M24 has the required high-bandwidth DP capability but does not state that exact timing on its current page.

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.

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.

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Needs verification

TESmart DKS202-M24

Published specifications do not prove the complete setup

What this means for you: DisplayPort 1.4, Display Stream Compression (DSC) and variable refresh rate (VRR) make it plausible, but obtain confirmation for the exact ultrawide timing.

Displays: 2
Video connections: DisplayPort 1.4
Published 4K ceiling: Single 165Hz · multi 144Hz
USB-C laptop charging: None

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

Product-specific limits

4K144 or 165Hz may require Display Stream Compression (DSC); confirm the GPU, monitor, adapters and cables support it.
Each display requires its own host-side DisplayPort signal.
It does not charge a USB-C laptop.

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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

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

Technical term unclear? See KVM terms explained for plain-English definitions and practical consequences.

Sources checked

The primary documents supporting the decisive compatibility claims on this page.

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