A matching USB-C plug is not enough to validate a Dell dock. For WD22TB4, the HDMI and MFDP USB-C video sockets cannot drive displays simultaneously. The Latitude 7450 also offers a documented two-direct-port route to the reference USB-C monitors without using a dock.
Component documentation · Not physically tested by NYBreakingA deliberately small compatibility matrix
| Host and path | Video outcome | Charging |
|---|---|---|
| Latitude 7450 → two direct U2723QE USB-C inputs | Document-derived 4K60 plan, stated conditions | Negotiated speed not assessed |
| 7450 → WD22TB4 HDMI + MFDP USB-C | Documented incompatible simultaneous port pair | Separate from this video restriction |
| WD22TB4 other listed output pair | Complete exact tuple still needs review | Match PSU, host and firmware |
| WD22TB4 → Mac | Use Apple-specific topology guidance; no blanket pass | Exact ceiling unresolved in our catalogue |
Why a new cable cannot fix the wrong pair
WD22TB4 shares a video path between its HDMI and MFDP USB-C sockets. Changing cable quality does not create a second independent signal on that pair. Dell lists alternatives such as two DisplayPort outputs and other pairs, but each positive setup still needs the host and simultaneous-mode requirements checked.
Distinguish a complete WD22TB4 dock from a module-only listing. The actual host cable/module and power supply belong in the equipment record.
Video and charging are separate questions
Dell’s general dock documentation and Apple-host guidance use different charging ceilings in different contexts. We retain this unresolved distinction rather than publish one exact Mac charging wattage. A visible picture is not proof of fast charging, power-button synchronization, USB throughput or wake stability.
For a missing picture, follow physical fault isolation. For Windows-specific controls, use the Windows 11 checklist.
Evidence you can inspect
Latitude 7450 has two Thunderbolt 4 ports with DisplayPort Alt Mode. The documentation describes two 4K display support.
Dell Latitude 7450: left ports ↗
Source location: Left, ports 2 and 3
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-10-08.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
WD22TB4 HDMI and MFDP USB-C video outputs are mutually exclusive. Presence of both ports does not allow simultaneous video.
Dell WD22TB4 simultaneous output ports ↗
Source location: Important information; dual-display setup
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-10-08.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Mac charging ceilings differ by documented PD/firmware context. Exact WD22 Mac charging remains unresolved here.
Dell Thunderbolt docks and Apple hosts ↗
Source location: Power delivery and Apple topology
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-10-08.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
U2723QE specifications list 3840×2160 at 60Hz, a USB-C DisplayPort Alt Mode input with up to 90W charging, an original 1m USB-C cable and a 1.8m DP-to-DP cable.
Dell U2723QE: official specifications and included cables ↗
Source location: Tech Specs: Native Resolution; Connectivity; Cables Included
Evidence reviewed 2026-09-30 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-10-08. A source change is queued for review.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Source availability and latest checks
- D2: last successful automated retrieval 2026-10-08 · latest attempt 2026-10-08.
- D4: last successful automated retrieval 2026-10-08 · latest attempt 2026-10-08.
- D5: last successful automated retrieval 2026-10-08 · latest attempt 2026-10-08.
- D1: last successful automated retrieval 2026-10-08 · latest attempt 2026-10-08.
A successful retrieval confirms availability, not unchanged meaning. An editorial source review is separate.
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